Tetras are one of the most popular and diverse types of freshwater aquarium fish. With more than 150 unique types of tetra ...

While it’s a known fact that female guppies prefer orange and unusual patterns on their male partners, the team found that ...

There, scientists identified the fish as a common snook showing xanthochromism. Xanthochromism is a “genetic disorder” resulting in “bright yellow or orange body coloration,” the study said.

The golden rainbows are trophy-sized fish measuring at least 15 inches — and averaging 1.5 pounds — which are readily identifiable by their bright yellow-orange color.

It's a bright orange fish with turquoise markings that is native to Kansas. This longear sunfish was caught by Scott Buss in the Little Blue River in Nebraska. (Nebraska Game & Parks Commission) ...

It’s a bright orange fish with turquoise markings that is native to Kansas. “This was the first time in all my career I had ever heard of a longear sunfish in Nebraska,” Bauer said.