Scientists have discovered the fossilized remains of a new fish species called Ferruaspis brocksi, which lived 15 million ...

A community of rare fish enthusiasts collects endangered species of freshwater fish from lakes and springs around the world, ...

All steelhead start life as rainbow trout, but not all rainbow trout will become steelhead. Confused? You’re not alone.

In an Australian first, researchers have described a new species of 15-million-year-old fossilized freshwater fish, ...

WWF works to sustain the natural world for the benefit of people and wildlife, collaborating with partners from local to global levels in nearly 100 countries.

But fewer people are aware of their very distant relatives — a type of bony fish called the rainbow shark. Unlike their larger counterparts, rainbow sharks are actually small freshwater fish ...

The Texas Parks and Wildlife Department's Inland Fisheries Division has stocked nearly 27 million fish, comprising 17 ...

The giant freshwater stingray may be the world’s largest freshwater fish. It’s also cloaked in mystery. No one is sure how many giant stingrays are left, which habitats they prefer ...