"Fishes of the Chicago Region," a guide to fishes of the Chicago region by Francis Veraldi, Stephen Pescitelli and Philip Willink (University of Chicago Press), will be formally released on June 3. It ...

There's a type of fish that "hibernates" for months at a time. The lungfish burrows underground to estivate during dry seasons.

Palau's Jellyfish Lake is home to millions of endemic golden jellies that live in the lake's top layer but never venture ...