Among these, some fish stand out not just for their colors but also for their unusual shapes ... shaped fish that inhabit our ...

The oscar fish, a unique-looking fish from South America ... They're considered one of the most intelligent species of freshwater fish, and many of them reorganize their tank.

Native to Southeast Asia, a tiny freshwater fish packs a surprising ... this wily little fish occupies its own unique niche. Danionella cerebrum, pictured above, produces some of the loudest ...

These unique fish have the nickname "iridescent shark catfish," a seemingly ill-suited comparison for a toothless, freshwater fish. The nickname arises from its tendency to swim close to the ...

Bichir are the only living fossil fish commonly kept as pets. Bichir are bottom-dwelling freshwater fish native to western Africa. They are among the most primitive of the ray-finned fish ...

Burbot (Lota lota) are unique freshwater fish that are the only members of the cod family found in freshwater environments. Their ecology, management, and conservation are critical areas of study ...

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 ...

“Fire, drought and reckless water policies have made life really tough for these little fish. We’ve already lost seven of California’s unique freshwater fish species to extinction, and we shouldn’t ...

“We’ve already lost seven of our state’s unique freshwater fish species to extinction, and it’d be a shame for California to lose any more,” said Jeff Miller, a conservation advocate at the Center.

The Voyageurs Wolf Project, a collaboration between the University of Minnesota and Voyageurs National Park, has followed GPS-collared wolves from over seven different packs since 2015, but the ...