If you see that a fish is suffering from barotrauma, you must fizz it, because the odds of it surviving otherwise are ...

Subscribe to Marlin magazine and get a year of highly collectible, keepsake editions – plus access to the digital edition and archives. Sign up for the free Marlin email newsletter. As an angler and ...

Betta, or Siamese fighting, fish are among "the most popular freshwater aquarium fish in the world," PetMD reports. Native to southeast Asia, this species is known for its range of vibrant hues. There ...

Fish may seem to just swim around without much thought or character. But new research reported in Ecology and Evolution has suggested that actually, fish have personality, which they exhibit in their ...

As you sit and watch a goldfish swim in its bowl or a school of fish glide effortlessly through the open sea, you can’t help but imagine what they’d be like as uncomplicated, instinct-driven creatures ...

Editor’s note: The following is an excerpt from What a Fish Knows: The Inner Lives of Our Underwater Cousins by scientist and author Jonathan Balcombe. Do fishes feel pain? While it may seem obvious ...