"Fishes of the Chicago Region," a guide to fishes of the Chicago region by Francis Veraldi, Stephen Pescitelli and Philip ...

It’s shocking to realize that jellyfish, despite their name, aren’t fish ... warmest tropical waters to the icy depths of the polar seas. Some species even thrive in brackish or freshwater ...

If you're in the throes of setting up a home aquarium, you may be curious about the types of freshwater fish you can keep as a pet. Often the first fish that springs to mind is a goldfish ...

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!

A strange video from the South Atlantic Ocean showed parasites on a deep-sea fish. These parasites, Lophoura szidati copepods, looked like they had pigtails. They clung to the head of a rattail ...

The best jaw for hunting fast fish is long and full of sharp teeth ... today's animals and better anticipate how they will respond to freshwater ecosystem changes still to come.

An "odd-looking" deep-sea fish recently washed ashore on an Oregon beach to the surprise of a local aquarium. The Seaside ...

The gar is a new pending world record. It’s also the heaviest freshwater fish ever landed on 2-pound test, according to the International Game Fish Association. Weston says he is now focused on ...

What do you do with a bizarre-looking dead fish that’s missing an eyeball and could be mistaken, at a distance, for a monster ...

A striking 11-foot oarfish on display in the new exhibit Oarfish: Recent Discoveries from the Scripps Institution of Oceanography Collection at the Birch Aquarium ... these rare fish up close ...