Swim Bladder
(anatomy, usually of fish) A gas-filled sac within the bodies of most fish that variously acts as a float, lung, sound-producing organ or an aid to hearing.
| Synonyms |
air bladder
gas bladder
(anatomy, usually of fish) A gas-filled sac within the bodies of most fish that variously acts as a float, lung, sound-producing organ or an aid to hearing.
| Synonyms |
air bladder
gas bladder