Mixing escaped fish with established monsters sounds simple until you watch the instant underwater drama unfold. The new fish panic, the old fish posture, and the entire tank becomes a huge test of ...

This tank upgrade gets serious fast as massive new fish enter the 300-gallon aquarium. The moment they hit the water, the whole tank shifts—territories change, currents swirl and every resident reacts ...

The iconic, armored, 14-foot-long Dunkleosteus was something of an "evolutionary oddball,” a new study has revealed.

The Missouri Habitats area features animals native to the Ozarks, including playful otters, white-tailed deer, wolves and ...

Peaceful tanks look great, but they’re not always the most exciting. Some fish bring a lot more drama, and for hobbyists who ...

The biggest fish in each state tells a story about local ecosystems and angling history. Massive freshwater giants lie ...

These three fish are freaks, phantoms and mysteries of the deep. Here’s what we’ve learned from the rare glimpses we’ve had ...