A clever tropical fish has flipped how biologists are thinking about memory, brains and visual recognition in the animal ...

This octopus behavior might look funny at first glance, but it reveals how evolution solves complex problems in unexpected ways.

The cow goes moo. The duck goes quack. The dog goes woof. And the fish goes ... what, exactly? Toddlers aren’t the only ones asking this question. Scientists are eavesdropping on fish to research and ...

The state is on a campaign to remove invasive smallmouth bass, which harm ecosystems and eat other fish, threatening native species. Colorado Parks and Wildlife runs a fishing tournament every other ...