There are about 228,000 known species that live in the ocean, and experts estimate there are another 2 million that remain a ...

As far as fish go, the Asian arowana is one of the most expensive aquarium species sold in the pet trade. It is a freshwater fish that has people paying in the tens of thousands of dollars for the ...

A rare fish species thought to be extinct for over 80 years was rediscovered in India. The journal Zootaxa announced on Friday, Jan. 31, that a Chel snakehead, also known as Channa amphibious, was ...