Add Yahoo as a preferred source to see more of our stories on Google. "Our veterinary medicine teams sedated the fish and ran water intermittently over its gills," the Denver Zoo wrote on Instagram ...

Reef fish in different oceans often develop similar color patterns because evolution explores the same set of biological possibilities.

Angelfish are one of the most spectacular fish species that you can get for your home aquarium. These gorgeous cichlids have an elegant appearance because of their distinctive triangular bodies.

A fancy-looking French angelfish that was found one day with a funny float has its buoyancy back after taking some time from its tropical trappings to get a CT scan at the Denver Zoo. A zoo worker ...