Giant predator catfish are some of the most powerful freshwater fish in the aquarium trade. Their size and feeding response make them both fascinating and dangerous tank residents.

As the USA Today Network reported, lionfish are an invasive species in North Carolina that are devastating the local ecosystem. These fish are native to the Indian and western Pacific Oceans but were ...

Small fish may have small brains, but they're not stupid. A common coral reef fish called damselfish can learn to avoid predators from more experienced kin, even in complete darkness, new research ...