Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...

These are the prettiest freshwater fish, from vibrant brook trout and pumpkinseed sunfish to majestic lake sturgeon. Check out how these species made our list!

Species that are popular in the ornamental fish trade are very adaptive by nature. This virtue helps them easily adapt to ...

And our attention will be full captivated starting May 22 when "Living Seas" opens at the Birch Aquarium in La Jolla. Get top ...

Identifying the scaly animal from the Republic of the Congo was “particularly problematic” and led to “long-standing” ...

Researchers discovered tiny features on sculpins' fins which may enable them to cling firmly in harsh underwater environments.

Imagine plunging into the mysterious depths of the ocean, surrounded by shimmering scales, undulating fins, and creatures ...

Aquatic predators such as oscars, catfish, and pet turtles feed on other fish in the wild. But is feeding live fish a good ...