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

Parrotfish construct a cocoon made from mucus to protect themselves when they are sleeping. It's like a personal mosquito net ...

Ciguatera—a toxin that accumulates in reef fish—is a common cause of seafood poisoning. Learn which fish are safest to order ...

Just bought an aquarium and wondering what to put in it? We’ve got some recommendations. From garden ponds filled with Koi Carp to the humble goldfish bowl (although goldfish really need far more ...

Along a nine-mile stretch of river between two waterfalls in the Australian rainforest lives a tiny fish that’s been there for millions of years, hiding between rocks along the riverbank by day and ...

Museum samples from the USS Albatross. (Photo by John Whalen, Old Dominion University) At this year’s annual meeting of the Ecological Society of America in Baltimore, almost two dozen students and ...

If you’re considering getting your first freshwater tropical fish aquarium then these are the finned friends that should be topping your list.