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Tan Bristlemouth Fish Is The Most Abundant Species
According to scientists, tan bristlemouth fish is the most abundant species of vertebrate on our Earth. Also, its genus is the most abundant vertebrate genus in the world. They are usually deep-sea creatures, so they are quite difficult to study.
Oldest Species Of Domestic Fish
Paradise Fish are one of the oldest species of domestic fish and they are mainly found in freshwater in East Asia. It is described that they were first kept in tanks in 1665.