These dangerous fish, found in various environments, from freshwater rivers to the vast oceans, have developed various ways to protect themselves and hunt their prey. Here are ten of the world’s most ...

New tank syndrome involves a dangerous buildup of toxins. Discover what causes it, how it hurts fish, and how to prevent it ...

Colorado might not be home to predators like alligators, sharks, or water moccasins, but it's got a few fish that can bite back. While Centennial State aquatic life probably won't kill you, it could ...