Swim bladder disease is a very common health condition that affects many types of fish. In short, it makes it difficult for the fish to maintain buoyancy because of a compromised swim bladder. They ...

Researchers in New Zealand have made what they believe is the first recording of a shark actively making noise.

Listen to the sharks crackle: More than 1,000 fish species are known to produce sounds, usually by vibrating their swim bladder, a gas-filled organ that helps the animals stay buoyant and can also ...