If you keep pet fish, at some point, you may have encountered an escapee lying lifeless outside the water. Fish jumping out ...

Russian mermaid performer Mariia Zelenina, 22, went viral after a giant fish attacked her by biting her head while she was ...

But the best aquarium pets that aren’t fish prove that our finned friends aren't the only additions that can thrive in a tank. From African Dwarf frogs and Red-clawed Crabs to Male Painted ...

Far from its home in Indonesia, a brightly colored creature moved around in an aquarium. Scientists peered into the tank, studying their pet-turned-specimen—and discovered it was a new species.

Studies suggest that watching fish swim can elevate mood, help with depression, and improve overall mental well-being.

"When an aquarium in Japan closed to the public for restorations, the aquarium's beloved sunfish grew lonely without visitors and lost its appetite — until aquarium staff pasted cutouts with photos of ...