47 Types of Tetra Fish [From A to Z] | A Complete Tetra Species Guide

Tetra fish are a group of small freshwater fish that belong to the Characidae family. These fish are usually small in size and have vibrant colors. The tetra fish originates from Africa, Asia, Central America, and southern America. Tetra fish, most of the time, only grow up to 3 inches in size, so these are some of the best fish to keep in your aquarium. The beautiful, bright, and vibrant colors and easy care requirements of the tetra fish have made them the favorite among many fish keepers.

Tetras are considered as the true rainbow fish in the freshwater species. There are more than 150 species of tetra fish discovered to date. These species exhibit a lot of variation in terms of size and color. They range from strip to spotted body pattern, single color to multicolor and neon, big to small, and so on.

Those aquarists looking for a schooling species for their freshwater community tank will inevitably end up considering tetras as the tetra brighten up the middle water level of the tank and moves in a group.

Here I am trying to cover each and every type of tetra fish discovered to date.

47 Different Types of Tetra Fish

There is a lot of fish that fall under the category of the tetra fish. You may have also known these fish as the tropical fish. Almost all of the tetra fish have different characteristics from one another. Some are small, while others are large. There is also a wide range of colors in the tetra fish variety. You can find almost every color of tetra fish.

And in this article, I will list out some of the most common tetra fish found throughout the world.

1. Adonis Tetra

The Adonis tetra (Lepidarchus adonis) is one of the rarer varieties of tetra fish. The Adonis tetra belongs to the Alestidae family. And we also know the Adonis tetras as jellybean tetras. These fish are native to Africa and are a few fish belonging to African natives. The jellybean tetras have a unique appearance with small red spots throughput its tail portion. And due to this different pattern fish keepers have been demanding the Adonis tetra is mass numbers these days.

Fish Classification

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2. African Moon Tetra

The African Moon Tetra (Bathyaethipos caudomaculatos) are small grey species of tetra. The African moon tetra is native to Africa and is found in the slow-flowing waters of the congo river. The body of this fish is greyish to clear grey in color and it has a black spot towards its caudal fin. It is one of the most rarely kept tetra fish in an aquarium.

Fish Classification

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3. Alestes Tetra

The Alestes Tetra (Brycinnus longpinnis) is a fish belonging to the Characin family. It originates from Africa and is naturally found only in Africa. These fish are generally bigger in size and appear much larger than any other normal fish from the tetra family. The Alestes Tetra can grow up to 12cm lengthwise. If you want a school of larger tetra fish the Alestes tetra will be best for you. Its body has a mixed coloration of green, silver, and gold. These fish are very hardy and have a decent size so it is one of the best fish for a beginner fish keeper.

Fish Classification

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4. Banded Tetra

The Banded Tetra (Astyanax aeneus) is a larger variety of tetra fish that is native to Mexico. Their body is lightly colored with different shades of green, silver, and yellow. Its caudal fin and dorsal fins are yellow in color while its anal fin is red. The Banded tetra can easily grow up to 14cm. You need at least a 40gallon aquarium to house a school of Banded tetra.

Fish Classification

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5. Blackedge Tetra

The Blackedge Tetra (Tyttocharax madeirae) is a beautiful fish from the Characin family. It is native to the Amazon Basin of Southern America. The Blackedge tetra is very small in size and will grow to about 6 cm. Its body is streamlined which helps the fish to swim fast through strong currents of water. The body of the black edge tetra is translucent light blue in color which makes it a very desirable tetra fish. You can easily house a school of Blackledge tetra fish in a 30gallon aquarium.

Fish Classification

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6. Black Neon Tetras

black neon tetra

The Black Neon Tetras (Hyphessobrycon herbertaxelrodi) are very identical as the neon tetras but are of different species. They have the same body shape and marking in their body. However, the coloration of the black neon tetra is different from the neon tetra. As the name suggests it has a streak of black and silver lining across its body form the tip of the mouth to the tail. If you are tired of keeping neon tetras but want similar fish, the black neon tetras are perfect for you.

Fish Classification

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7. Black Phantom Tetra

The Black Phantom Tetra (Hyphessobrycon megalopterus) are some of the most common tetra fish in the fishkeeping hobby. We also know the Black phantom tetras as phantom tetras. They are small tetra fish belonging to Characin family. They have long dorsal and anal fins and have a black spot behind their gills similar to the bleeding heart tetras but black.

Fish Classification

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8. Black Widow Tetra

black skirt tetra

The Black Widow Tetras (Gymnocorymbus ternetzi) is one of the most commonly kept tetra fish in the hobby. These fish are native to Sothern America. The black widow tetras are extremely hardy and easy to keep. The anal fin of the black widow tetra is black in color which is different from the grey color in the body and for this reason the black widow tetras are also known as black skirt tetra or simply black tetra.

Fish Classification

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9. Black Morpho Tetra

Black Morpho Tetra

The Black Morpho Tetras (Poecilocharax weitzmani) are some of the most interesting looking tetra fish. We also know the Black Morpho tetras as black darter tetra. The fish originates from the Amazon basin of Peru, Venezuela, and Cambodia. The Black Morpho tetras have large and beautiful fins and their body closely resembles a dart. These fish aren’t for everyone and might be hard to care for. So you must do some research before buying your first pair of Black Morpho Tetra. You will need at least a 30-gallon aquarium tank to keep a pair of black Morpho tetra.

Fish Classification

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10. Bleeding Heart tetra


The Bleeding Heart tetras (Hyphessobrycon erythrostigma) are some of the most unique looking tetra fish. The Bleeding heart tetras are native to Upper Amazon river basins. It has a red dot on its body which makes the fish appear like a bleeding heart, thus it is known as Bleeding heart disease. The bleeding heart tetras are some of the most unique looking tetra fish.

Fish Classification

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11. Blood-fin Tetra

Do Tetra Fish Need Sleep? How do they sleep?

The Blood-fin Tetra, also known as Bloodfin, Glass Bloodfin, the Red-finned Characin, the Red-finned Tetra, and the Argentine Bloodfin, originates from the Rio Parana basin in Argentina, Brazil, and Paraguay, South America.

Blood-fin tetra is silver in color and has a slim and laterally compressed body with forked caudal fin. The caudal, dorsal, anal, and adipose fins are red in color. Among the aquarium, the Bloodfin Tetra is an excellent freshwater ray-finned fish.
The maximum size of blood-fin tetra is 5-5.5 cm (2 inches). Red bloodfin tetra lives about 4-6 years. The anal fin has a small hook at the end of the male.

The fish jumps above the water surface and leaves its eggs in the water. During the time of spawning, due to the heavyweight of the eggs, falls to the floor of the tank or water body — the female deposits 300–500 eggs at a time.
Since bloodfin tetra is a very enduring and undemanding fish, it is suitable for beginning aquarists.

For the fish couple, it requires the minimum tank size of 30 liters, but it would be better to keep them in a school in a large-sized tank. Bloodfin tetra should be about 6-8 species in a tank of school. Since the fish swims in the upper water layer and they are capable of jumping out from the tank, the tank should be an elongated one and covered from the top. The water temperature of the tank should be 72- 82 F.

Bloodfin Tetra feeds the live blood worms, glass worms, brine shrimp, and tubifex worms. Bloodfin Tetra also feeds the frozen vegetable diet, daphnia, plankton, beef heart, flakes, and frozen, dried foods too.

Fish Classification

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12. Blue Tetra

blue tetra
Credit: https://aquaticarts.com/products/blue-king-tetra

The Blue Tetra (Knodus borki) is a small variety of tetra fish native to the rivers, and streams of Brazil and Colombia.  These fish are very small in size and only grow to about 5cm in length. The female blue tetra tends to be larger than the male however, they don’t exceed 8cm in length. Their compact size makes them perfect for a planted tank. The abdominal part of the Blue Tetra is shining silver in color and the tail part is blue in color. This color combination makes it a gem to the eye. You can easily house a school of Blue tetra in a small aquarium as small as 10gallon.

Fish Classification

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13. Buck Tooth Tetra

Bucktooth Tetra

The Buck Tooth Tetra (Exodon paradoxus) is one of the aggressive variety of tetra fish. They are carnivorous and are micro predators. The bucktooth tetra originates from the Amazon basin. It was first discovered in 1932 in the aquarium hobby. We can see a lot of small sharp teeth in the mouth of the bucktooth tetra. It has a silver body with a distinct black batch on its body and the tail.

Fish Classification

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14. Buenos Aires Tetras

Buenos Aires Tetra
Image Credit: https://www.flickr.com/photos/[email protected]/44665442294/

Buenos Aires Tetras scientifically known as “Hyphessobrycon Anisitsi,” also known as “Hemigrammus Anisitsi,” “Hemigrammus caudovittatus,” and “Hyphessobrycon erythrurus” and commonly called “Buenos Aires tetra,” “diamond spot characin,” “red cross fish.” The fish has a pretty, silvery color overall, with some flashy neon highlights and is hardy, long-lived, and prolific breeders.

These full-bodied fish can be up to about 2.75inches (7 cm) in length and can survive about 5 to 6 years. The most distinguishing feature of Buenos Aires tetra is the bold, black ‘cross’ shaped pattern at the base of its tail fin, accented with red above and below. Male Buenos Aires tetras have brighter, red fins and are generally more colorful overall, particularly during spawning, whereas females are larger and broader with a rounder belly. They usually spawn at dawn. When a female is full of eggs, the belly will become nicely rounded. Females may lay as many as 2,000 eggs, depositing them on the plants or green floss.

It is originated from Argentina, southeastern Brazil, and Paraguay. The aquarium size is about 30 gallons slightly acidic to neutral with a pH of 5.8 to 8.5 and a temperature of 64 to 820F. Gentle filtration, like a sponge filter, is recommended. If the tank is densely stocked, you need to replace at least 25 to 50 percent of the tank water every other week.

Buenos Aires tetras should be fed several times a day. Buenos Aires tetra is omnivores and accepts a wide variety of foods. In the wild, these tetras primarily feed on worms, crustaceans, insects, and plants. However, in the aquarium, they are fed all kinds of live food, fresh, and flake foods, lettuce, spinach, or other vegetation. Offering live foods such as bloodworms, daphnia, brine shrimp, and mosquito larvae can keep these tetras at their best and most colorful.

Fish Classification

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15. Candy Cane Tetra

Candy Cane Tetra

The Candy Cane Tetra (Hyphessobrycon bentosi) is one of the most beautiful tetra fish. It is also known as the Ornate tetra and False Rosy tetra due to its close resemblance. The Candy Cane Tetra is native to Southern America. What differentiation the candy cane tetra from the rosy tetra is its beautifully dorsal and anal fin. These fins are usually long and white-colored. The gown to about 5cm long which is almost the same as the Rosy tetra. The candy cane Tetra makes a perfect fish for your community tank or a planted tank. It is considered to be one of the premium tetra fish.

Fish Classification

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16. Cardinal tetra

cardinal tetra | lifespan of tetra fish

The Cardinal tetras (Paracheriodon axelrodi) are some of the larger sized tetra fish. The cardinal tetra originates from Southern America and closely resembles the neon tetra in coloration. Cardinal tetras are the buffed up version of neon tetras. They look beautiful in a large planted tank as it gains a lot of attention for its bright color and its size. The cardinal tetras can grow to up to 3 inches.

Fish Classification

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17. Carlana Tetra

The Carlana tetra (Caralana egeinmanni) is a rare variety of tetra fish that has a unique appearance. The Carlana tetra originates from the freshwater of Costa Rica and Panama. It has a pale yellow body and a distinctive long dorsal fin. The body color and its fin gives the fish quite a unique appearance. Carlana tetras grow up to 7 cm. These fish are very sensitive to changes in the parameter of the water in your aquarium. I would only suggest expert level fish keepers keep Carlana Tetras in their aquarium.

Fish Classification

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18. Cochus Blue Tetra

blue tetra
Credit: https://aquaticarts.com/products/blue-king-tetra

The Cochus Blue Tetra (Boehlkea fredeouchi) is some of the more common varieties of tetra fish. They are native to the Amazon basin. Their body is entirely painted by blue color sp they are also known as Cochus Blue tetras.  The Cochus tetras are fast-swimming fish suitable for planted tanks and any type if community tank.

Fish Classification

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19. Colombian Tetra

Colombian Tetra

The Colombian Tetra is also known as the “Columbian” Tetra, the Blue-Red Columbian, and the Red Tail Mirror Blue Tetra originated from Colombia. The fish is scientifically known as Hyphessobrycon ecuadoriensis and was recently changed to Hyphessobrycon columbianus, which more accurately describes its Colombian origin.

Talking about its body structure, the caudal fin of the Colombian tetra has a band of blue across the upper body with red in the fins, and the lower body is silvery.

The normal lifespan of Colombian Tetra is about 5 years and grow up to 7 cm or 2.5 inches.
The aquarium size should be with the base dimensions of 90 ∗ 30 cm or equivalent 30 US Gallon. When kept in groups of 6, Colombians are happier and show better colors. They appreciate a well-planted tank, but they will eat plants.

Colombians will eat flake foods, freeze-dried bloodworms, and brine shrimp.

Generally, males and females, Colombians, are difficult to distinguish via color. When laden with eggs, the female is larger and broader. Slightly acidic but soft water is best for breeding with pH 5-7.5 and temperature of 20-28 degree Celcius whereas lighting should be greatly dimmed. Before breeding, pairs should be separated for more than a week and fed a variety of foods. Colombians spawn multiple times over days. The parents should be removed after spawning.

Fish Classification

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20. Congo Tetra

congo tetra
Credit: https://www.flickr.com/photos/[email protected]/

The Congo Tetra is also known as Phenacogrammus Interruptus, is a species of fish in the African tetra family. Congo Tetra is found in the central Congo River Basin in Africa. It is a large fish for tetra kind in which the male size may be up to 8.5 cm, and the female may be up to 6 cm correspondingly.

The lifespan of Congo tetra is 3 to 5 years. The male fish has long veiled edges on a dorsal, fluke, and anal fins and three-bladed tail with a pronounced middle blade.

The body coloring is opalescent, and the colors vary from tints of blue on its back to red-orange and gold yellow on the fish sides, and again there are bluish colors on the abdomen.

Male fish is larger, brighter colored, and it has larger fins, whereas the female fish is small, significantly less brightly colored, and their abdomen is larger and more rounded. At the age of 8-9 months, the fish becomes reproductive.

A tank size of about 20 gallons capacity is required, but it’s better to be 40 gallons or more. The water temperature of 24-27 C is appropriate for a tetra to survive with a pH of 6.5-7.5.

The fish should also consist of 60% of animal feed (blood worm, tubifex, brine shrimp) and 40% of plant feed (filamentous alga, spinach, feeds containing spirulina).

Tankmates can consist of the majority of small African and South American Characin fishes, live-bearing fishes and barb, Corydoras (like pygmy or panda). It’s more proper to keep Congo tetras in a school of 4-20 species separately from other fishes.

Fish Classification

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21. Costello Tetra

The Costello tetra (Hemigrammus hyanuary) is the species of tetra fish native to Brazil and Peru. We also know the Costello tetra as Green Neon. The Costello tetras are very plain and dull in colors. They have grey to white bodies and have a black spot towards its tail.

Fish Classification

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Dawn Tetra

The Dawn tetras (Aphyocharax paraguayensis) are a small variety of freshwater tetra fish. The Panda tetras are native to Paraguay and Brazil. We also know the dawn tetras as Rio tetra or the panda tetras because of the distinct white and black spots around its tail fin area.

Fish Classification

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22. Diamond Tetra

diamond tetra

The Diamond tetras (M. pitteri) are bright whitish fish, but they aren’t albino. These fish originate from Venezuela. The diamond tetra shines bright in your aquarium. The color of the body of diamond tetras is bright silver colors resembling a diamond and thus they are known as Diamond Tetra.

Fish Classification

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23. Discus Tetra

The Discus Tetra (Brachychalcinus orbicularis) is a variety of Tetra fish that closely resembles the body shape of the Discuss Cichlid. However, the discus tetras are not as brightly colored as the Discuss cichlid and are very hardy and less demanding. The discus tetras originate from the rivers and creeks of the Sothern America. These fish are omnivorous and often times might eat your plants, so I wouldn’t recommend you to keep the discus tetra in a planted tank. Discuss tetras are very big in size compared to normal-sized tetras and can grow to about 15cm. the Discus Tetra would look great in a community tank with Angelfish and other similar sized semi-aggressive fish.

Fish Classification

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24. Disk Tetra

The Disk tetra (Myloplus schomnurgkii) is some of the larger sized tetra fish. The disk tetras are native to Sothern America. We also know the Disk Tetras as Disk Pacu or the single barred tetra. They have the body type similar to the Pacu fish but have a distinct white line across its body. The disk tetra can grow up to 9 inches if you provide enough aquarium space and care.

Fish Classification

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25. Ember tetra

ember tetra

The Ember tetra (Hyphessobrycon amandae) belongs to the Characin family. The ember tetras are native to Brazilian river basins and were first discovered in 1987. The ember tetra was named after the mother of the person who discovered this fish for the first time. These fish have bright orange to reddish coloration throughout their body.

Fish Classification

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26. Emperor Tetra

Emperor Tetra

Emperor Tetra, also scientifically known as Nematobrycon Palmeri and commonly known as Emperor Tetra, Imperial Blue Rainbow Tetra, is a species of characid fish found in the Atrato and San Juan river basins in western Colombia.

Below the stripes, the body is lighter in color and the body, the color is blue-gray with mauve tones. A horizontal dark line runs from mouth to tail. Both sexes have yellow hue fins and are edged in black on the outer periphery, and red where the fin meets the body.

The body of Emperor Tetra is long, slim, and gets about 3 inches at maturity. It grows up to 4.2 cm. Emperor tetras are quite easily distinguished from sex. There are several ways to differentiate a male and female emperor tetra; the most reliable method is to observe its eye color. Males will have metallic-blue eyes, whereas females possess metallic-green eyes. Also, the male has a three-pronged tail with the medial black stripe, usually extending beyond the rest of the tail.

The emperor tetra eats both animal and vegetable food. Any good flake or pelleted fish food or any live food like daphnia and mosquito larvae or frozen fish food, including frozen bloodworms, benefits this tetra.

The pH of 6.5 and a temperature of 23–27 °C is the best of the emperor to survive. A pair appears happier than with most tetras.

27. Filigree Blood Fin Tetra

Do Tetra Fish Need Sleep? How do they sleep?

The Filigree Blood Fin tetra (Prionobama filigera) is another beautiful fish from the Characidae family. It is native to the slow-moving waters of Southern America. the Filigree Blood FIn tetra is one of the rarer tetra fish. Its body is long and slender and is transparent. But its caudal fin is red in color giving it a distinctive look and also its name. They grow to about 5cm. The Filigree Blood Fin tetra will look great in a species only tank and your aquarium should hold at least 30 gallons of water.

Fish Classification

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28. Flame Tetra

Von Rio Tetra - flame tetra

In this case, the name of the fish speaks for itself. These species are some of the most popular tetras in fish keeping hobby due to their size and color. Flame Tetras are community fish and they will light up any community tank with their incredible appearance.

Talking about their body and color, their scales are very thin and transparent (a see through scales) exposing their inner organs. Likewise, their body color is a mix of fire red and orange that looks like a fire (This is where it got its name from). They grow to about 1.2 inches in length and require 20 gallon tank for a school of 6 tetras.

Fish Classification

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29. GloFish Tetra

The Glofish tetras are the genetically engineered bright fluorescent fish usually of red, blue, or green color. These fish are injected with GMOs to bring out these artificial colors in the fish. The Glofish tetra is a feat of scientific achievement and will look beautiful in your aquarium tank because of its beautiful and bright colors.

Fish Classification

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30. Gold Tetra

gold tetra
Image Credit: Diana MacPherson – https://www.flickr.com/photos/dianamac/8753926773/

The Gold Tetras (Hemigrammus rodwayi) are small tetra fish. The gold tetra fish are native to South America are some of the fish most attractive tetra fish. The gold coloration throughout the body of Gold tetra makes them stand out among the other fish from the tank. These fish also look great in a community tank with a wide variety of other tetra fish. You can keep a small school of gold tetra easily in a 20-gallon aquarium tank.

Fish Classification

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31. Glowlight Tetra

glowlight tetra

The Glowlight Tetra (Hemigrammus erythrozonus) is one of the brightest Tetra fish. It is completely different from the Glofish Tetra and is native to the Guyana river of the Sothern America.  They grow to about 6cm. The Glowlight Tetra has a grey body with a bright streak of glowing orange color from its head to its tail. You should at least have a 20 Gallon aquarium for a pair of Flowligt tetra.

Fish Classification

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32. Green Neon Tetra

green neon tetra

The Green Neon Tetra (Paracheirodon simulans) are small freshwater fish from the Characidae family. They are native to South America’s Orinoco and Negro Rivers. The Green Neon tetra is similar in appearance and is closely related to Neon Tetra but are slightly smaller and slimmer than the neon tetras. It’s easy to differentiate green neon tetra from neon tetra, the difference you will see is the body color. The Green Noen Tetra’s abdomen and the upper part of their body has a little mix of green shades. Likewise, the signature line in them is not as red and bright as in the neon tetras however has Greenish shared to it too. They grow about 3.5 gm (1.4 inches) in length.

Fish Classification

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33. Lemon Tetra

Lemon Tetra (Hyphessobrycon pulchripinnis): Care Sheet

The Lemon Tetras (Hyphessobryeon pulchripinnis) are small tetra fish originating from Southern America. These fish have a white body with a distinct yellow to light yellow coloration around its stomach. The intensity of the color may vary from light yellow to almost bright electric yellow. The lemon tetra was introduced to the fish keeping hobby in the year 1932.

Fish Classification

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34. Longfin Tetra

The Longfin tetras (Brycinus longipinnis) are some of the most beautiful tetras form the tetra family. The longfin tetras are native to Africa. And these fish have long dorsal and anal fins. The longfin tetra has rose color in its body. And its fins of the longfin tetra are clear white.

Fish Classification

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35. Mexican Tetra

Mexican Tetra | Care Sheet

The Mexican tetra (Astyanax mexicanus) is one of the oddball fish from the tetra fish family. These fish were first discovered in a cave from Mexico.  We also know the Mexican tetra fish as the blind cave tetras and cave tetras. And like the name suggests they have no eyes. The Mexican tetra fish have an albino body with no eyes. This might be bizarre to most of us fish keepers, but the Mexican tetra has raised a lot of questions to the researchers.

Fish Classification

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36. Neon Tetras

Neon Tetra

The Neon Tetras (Paracheriodon innesi) are small bright blue tetra fish from the Amazon basin of Cambodia and Peru. These fish have a bright streak of red coloration towards its tail and a bright blue lining in its body.  These are the most kept fish from the tetra fish family.

Fish Classification

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37. Niger Tetra

The Niger tetra (Arnoldichthys spliopterus) are some of the more rare species of tetra fish which is common in the fish keeping hobby. The niger Tetra is native to Nigeria and it is also known as the African red eye tetra. The body of the niger tetra is dull blue in color but its eye has bright orange to red color. Its odd appearance makes it one of the most sought after tetra fish. These fish can grow up to 10 cm and require at least a 30gallon aquarium.

Fish Classification

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38. Penguin Tetra (Hockey stick)

false penguin tetra

The Penguin Tetra (Thayeria boehlkei) is one of the most beautiful tetra fish. We also know the penguin tetras as the hokey stick tetra. The hokey sick tetras are some of the easiest to keep in a school. Their body is light gray in color and has a straight streak of a line that ends in the bottom part of the tail fin of the fish. This streak gives a distinct look of a hockey stick so it is known as hokey stick tetra.

Fish Classification

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39. Rainbow Tetra

rainbow tetra care

Rainbow tetra are one of the most demanding Tetra species in the world. Rainbow Tetra is a peaceful species of fish and rare in type usually found in sluggish tributaries, small quiet rivers.

Rainbow tetra originates from South America and is precinct to Western Colombia. Rainbow Tetra is a peaceful shoaling species mostly found in a small quiet river(Rio Calima) and a stream of the Rio San Juan basin.

Rainbow Tetra belongs to the Characidae family. It has many of the same traits as the Emperor Tetra. Usually, the size of the fish in captivity is 3-4cm (1.18 – 1.57 inch).

Fish Classification

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40. Red Blue Colombian tetra

The Red Blue Colombian tetras (Hyphessobrycon columbianus) are some of the best looking tetra fish in my opinion. The Red blue Colombian tetras are native to northwestern Colombia. They have bright blue colors in their body and distinct red fins which gives them their name red blue Colombian tetra.

41. Red-Eye Tetra

red eye tetra

Red-Eye Tetra (Scientific Name: Moenkhausia sanctaefilomenae) was first described in the year 1907. The fish is an excellent choice for aquarists new to the hobby. This type of Tetra is very peaceful in nature and is compatible with other non-aggressive fish. Red-eye tetra usually is bright silver in color, a thin red circle around its eye, and a white-edged black basal half of the tail.

Scientifically, it is also called Moenkhausia sanctaefilomenae. Red-eye tetra is a species of tetra from the São Francisco, upper Paraná, Paraguay, and river basins in eastern and central South America. In Eastern Europe and Asia, this freshwater fish is commonly kept in aquariums and bred in large numbers at commercial facilities. Its maximum size can be 7 cm in length and lifespan for approximately five years.

Red-eye tetra is a hardy fish; the fish can tolerate a range of water conditions but prefer slightly soft, acid water. They add an elegant touch to the larger freshwater aquarium. The water volume of about 110 liters or 29 Gallons is recommended. The fish needs temperatures of 72–79 °F in a planted tank with plenty of shoaling space.

Generally, in the aquarium red-eye, tetra eats all kinds of live, fresh, and high-quality flake food to keep the right balance every day with brine shrimp (either live or frozen) or blood worms as a treat.

Males have smaller and flat abdomen while females Red tetras are larger and have a more rounded abdomen than the male tetras.

To breed red eye tetra, a separate breeding tank is required with slightly acidic, very soft water (4 dGH or below).

The Red-eye tetra lay eggs among the roots of floating plants and is free spawning. Once spawning has occurred, the mating pair should be removed, as they will consume the eggs and hatching fry. It takes only one day to hatch the eggs after they are laid.

Fish Classification

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42. Rosy Tetra

Rosy Tetra Care

The Rosy Tetra (Hyphessobrycon rosaceus) is a small tetra fish that grows to about 3inches in size. The rosy tetra is native to Brazil and Guyana. Their body has a very light red and orange color. These fish are slightly larger than the normal tetra fish and do take up quite a space in your aquarium tank.

Fish Classification

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43. Ruby Tetra

Ruby Tetra

Ruby Tetra, freshwater subtropical characin, is a small genus of Tetra which stands out in any aquarium with its beautiful appearance.

Dating back to its discovery in 1988, this Tetra is an inhabitant of leaf litter and floating plants with clean yet acidic water rich in tannins. It originated from the upper Río Meta, Colombia, South America.

Ruby Tetra are peaceful and shoaling species rather than most schooling Tetras. However, they are territorial in nature. This is what makes them shoaling rather than a schooling species.

Ruby Tetra are comparatively smaller in size and can grow up to 1.6 inches (4 cm) approximately.

Fish Classification

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44. Rummy nose Tetra

rummy nose tetra

The Rummy nose tetras (Hemigrammus rhodostomus) are another interesting looking fish from the tetra variety. These fish have a distinct red-colored head and a plain white body. This color makes the fish look as if it is bleeding from its nose. The rummy nose tetras are some of the most popular tetra fish because of its unique appearance.

Fish Classification

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45. Serpae Tetra

The Serape tetras (Hyphessobrycon eques) are small fire-colored tetra fish. We also know the Serpae tetras as jewel tetras. The jewel tetras are native to the Amazon basin of Peru and Cambodia. It has an orange body with bright orange colored fins. The dorsal fin of the Serpae tetras are black and it also has a black marking behind its gills. Serpae tetras grown to about 4 inches and are the perfect fish for any community tank due to its bright orange colors.

Fish Classification

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46. Silvertip Tetra

Silvertip Tetra
Pic Credit: https://www.flickr.com/photos/ricardokobe/10248897094/in/dateposted/

Silvertip tetra (Hasemania nana) is a small tetra fish that is slightly more aggressive. They are native to small creeks of Brazil. The silvertip tetras have yellow to almost golden body color. And the tip of the tail and anal fins are bright white or silver. And for these reasons, this fish is known as Silvertip Tetra.

Fish Classification

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47. X-Ray Tetra

x-ray tetra

The X-Ray Tetra (Pristella maxillaris) is a unique looking fish from the Characin family. It has a complete see-through body except for its abdomen and head. The X-Ray tetras are native to Venezuela, Brazil, Suriname, Guyana,  French Guiana,  and other parts of Southern America. These fish are very small in size and only grows to about 4cm. you can keep the X-Ray tetra in a biotope tank where it will thrive the most. The appearance of the X-Ray Tetra is very unorthodox so many breeders have been breeding X-Ray tetras in captivity to produce thousands of fish to meet the increasing demands of the costumers. As of now, there are two varieties of X-Ray tetra, one being the normal X-Ray tetra with clear white transparent body and the other is a Gold colored variant of the same fish.

Fish Classification

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These are some of the most kept tetra fish in the fish keeping hobby. The tetra fish are very easy to keep and have a vast personality. Tetra fish come in various colors and patterns. You will find out one for any type of aquarium tank that you have. The arrays of colors of tetra fish will give you a ton of choices to choose from.

There is a lot of new tetra fish being discovered and added to the large list of tetra fish family. New varieties of Tetra fish are added every year in the already large family of tetra fish.

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