swim bladders
Fish flotation sacs
Swim bladders are gas-filled organs found in most bony fish that control buoyancy, allowing the fish to maintain its depth without expending energy on swimming.
By adjusting the amount of gas in the bladder, a fish can rise, sink, or hover in the water column.
The organ also plays a role in sound production and reception in some species.
The fish's swim bladder had been damaged, causing it to float awkwardly near the surface.
- airGaseous envelope surrounding Earth
- fishGilled aquatic vertebrate
- balanceSteadiness or amount owed
- bony fishFish with calcified skeleton
- ichthyologyScientific study of piscine life
inflate · dorsal fins · gas · sound production · buoyancy · neutral buoyancy · lungs · internal · ascending · aquarium · bony · equilibrium · diving · oxygen · depth · underwater · carp · isinglass
- fishing wastefish guts, fish heads, fish scales, entrails, viscera
swim, swimming, swimmer, bladder, swimwear, bladders, swimmable, swim bladder, air bladder