Always check your fish for signs of sickness to avoid aggressive behavior. Veil Angelfish. These freshwater fish will always start well as a group. After a little while, the school of angelfish ...

The Pennsylvania Fish and Boat Commission is monitoring invasive rusty crayfish that act like gladiators as they try to take ...

Sharks are becoming a popular feature in home aquariums, but there’s a clear distinction between freshwater and saltwater ...

Few freshwater fish can match the size of the Mekong giant ... With sharp teeth rivaling piranhas and an aggressive hunting style, goliath tigerfish can grow up to 6 feet and weigh 110 pounds.

The giant freshwater stingray may be the world’s largest freshwater fish. It’s also cloaked ... Experts, however, stress that the rays are non-aggressive and inquisitive.

A recent study co-authored by UW professor and freshwater ecologist Julian Olden found a direct connection between the introduction of invasive freshwater fish and the decline of beta diversity in ...

Learn More › Smallmouth bass are brutes. Pound for pound, they are one of the strongest and most aggressive fish that swim in U.S. freshwater. Their fight is one the key reasons why anglers love them ...

In an Australian first, researchers have described a new species of 15-million-year-old fossilized freshwater fish, ...