Most species of piranha are vegetarians ... Lastly, we have perhaps the most dangerous of all freshwater fish, the bull shark ...

All oscar fish have the same care requirements ... They're considered one of the most intelligent species of freshwater fish, and many of them reorganize their tank. It's like feng shui for ...

Mesmerizing, kaleidoscopic, and fabulously exotic, the huge variety of types of saltwater fish to pick for your aquarium will ...

It’s an extraordinary fact: 51% of all known species of fish live in freshwater - 18,075 species. And more are being discovered all the time. But few people have any idea of the unimaginable diversity ...

But unlike birds and reptiles, in many freshwater fish species it is the male that builds and tends the nest. "They try to build an attractive nest to entice females to come and spawn with them," ...

Freshwater fish populations that dwell nearer the poles are outperforming their equatorial counterparts, researchers have found. Large-bodied migratory species such as Atlantic salmon are thriving ...

2 min read Freshwater ecosystems are essential for human survival, providing the majority of people's drinking water. The ecosystems are home to more than 40 percent of the world's fish species.

A report has warned of a "catastrophic" decline in freshwater fish, with nearly a third threatened by extinction. Conservation groups said 80 species were ... and to protect all our freshwaters ...

"It's just a little fish, not very colourful ... The reintroduction is being held up as an example of how freshwater ecosystems and species can be saved. Chester Zoo The reintroduction site ...

AUSTIN, Texas— Following a legal agreement with the Center for Biological Diversity, the U.S. Fish and Wildlife Service finalized protections today for seven Texas species of freshwater mussels ...