Definitions for "Swim Bladder"
Keywords:  buoyancy, sac, bony, fish, bladder
gas-filled pouch found in most bony fishes, used for buoyancy, sound production, and detection.
An organ found in most fish that traps a bubble of air to enable the fish to maintain buoyancy. It is an extension of the oesophagus.
a thin-walled, gas-filled sac found in bony fish that permits them to control their buoyancy and thus rise or sink in the water.