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Cardinal Tetra lifespan

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Do you remember when you walk into the aquarium shop, and there is this tank that has beautiful fish with vibrant red and blue colors? Even more attractive when they are in an aquascaped tank? Most of you might be like, yeah, those are neon tetra, but most of the time, they are actually cardinal tetras. Cardinal tetras are one of the most beautiful freshwater fish you can ever find. They are very underrated and…