Aggressive little male fish from Indonesia turn black when angry to show their dominance, scientists discover. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Cannibalism, stress, and low reproduction in captivity. This list of horrors has all but eliminated the matrinxã (Brycon cephalus) from the group of the fresh water fish most used commercially in ...

New research reveals signs of highly sensitive color vision in fish that live in the abyss beyond sunlight's reach An international team of researchers discovered a previously unknown visual system ...

The fish may have evolved the ability to see in color at depth by using rod cells instead of cone cells to detect light. In the dim light of dusk, the world appears gray. That's because we, like most ...