Koi fish are part of the Cyprinide species, their exact name is Koi carp. They originate from a land found between Eastern Asia, the Aral Lake, the Caspian Sea and the Black Sea. Originally they were called “nishiki-goi” and later adopted the name of Koi fish.
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Tetra fish are also known as Black Tetra or “the widow”. They are a tall, flat species that have a round anal wing all the way along the lower side of their body. The back side of the fish is not covered in scales.
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Betta splendens aquarium fish differ from the savage fish found in the natural biotrop. They are part of the Anabantidae species that are characterised through the existence of an additional respirator organ.
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Oscar fish are usually bred by fish specialists. They often serve as ornaments in public places.
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Piranha fishes also represent the source of nurture for many other species and also for human beings. They may not be the most ferocious Amazonian fishes but they surely are no little angels either.
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