Timah Tosah Lake, in the Malaysian state of Perlis, is at risk of being overrun by non-native fish, the New Straits Times reported. The biggest culprit, according to the state's Fisheries Department, ...

Peaceful tanks look great, but they’re not always the most exciting. Some fish bring a lot more drama, and for hobbyists who know what they’re doing, that can actually be the fun of it. These ...

Most anemonefishes are striped and the direction of their stripes — vertical or horizontal — correlate with their levels of territorial aggression A new study reveals that anemonefishes display ...

When fish from different habitats meet, it’s not always love at first swim. New research from Lund University in Sweden in collaboration with North Carolina State University shows that aggressive ...

Fish are more aggressive than many anglers give them credit for. These Lake Cascade jumbo perch were caught using three-inch-long crankbaits painted to imitate a small perch! Jordan Rodriguez Years ...

These amazing animals are best kept away from other less aggressive fish. From garden ponds filled with Koi Carp to the humble goldfish bowl (although goldfish really need more space to be happy and ...

Some pet tropical fish are naturally placid, while others are fearsome predators. From garden ponds filled with Koi Carp to the humble goldfish bowl (although goldfish are far happier living in a ...

Is it a fish? Is it a snake? No, it's a snakehead fish. For only the fourth time in the state of Missouri, an angler caught a northern snakehead fish that is not native to the U.S. Fisheries ...