swim bladder
Piscine buoyancy organ
A swim bladder is a gas-filled sac inside most bony fish that controls buoyancy.
By adjusting the amount of gas, the fish can rise, sink, or hover at a particular depth without expending energy swimming.
Also called an air bladder.
The fish's swim bladder had ruptured, leaving it unable to stay upright.
Respiratory membrane pocket
- oval windowMiddle ear opening
- epitheliumTissue covering body surfaces
- vascularizationFormation of blood vessels
- innervationNerve supply to tissue
Fish with calcified skeleton
- teleostBony, ray-finned fish
- carpWhine about trivialities
- codCold-water food fish
- bassDeep pitch or fish
perch · trout · goldfish · catfish · eel · lungfish · sturgeon · tarpon
Balanced submersion state
- inflationSustained price level increase
- deflationSustained decrease in prices
- hoveringSuspended without support
- ascendingMoving upward
descending · upthrust · flotation · equilibrium · stability
Transfer of respiratory molecules
- carbon dioxideRespiration byproduct, photosynthesis fuel
- blood supplyCirculatory delivery to tissues
- lactic acidAnaerobic metabolism byproduct
- gas pressureForce exerted by gas
air sac
Respiratory membrane pocket
- oval windowMiddle ear opening
- epitheliumTissue covering body surfaces
- vascularizationFormation of blood vessels
bony fish
Fish with calcified skeleton
bass · perch · trout · goldfish · catfish · eel · lungfish · sturgeon · tarpon · herring
neutral buoyancy
Balanced submersion state
- inflationSustained price level increase
- deflationSustained decrease in prices
- hoveringSuspended without support
ascending · descending · upthrust · flotation · equilibrium · stability
gas exchange
Transfer of respiratory molecules
- carbon dioxideRespiration byproduct, photosynthesis fuel
- blood supplyCirculatory delivery to tissues
- lactic acidAnaerobic metabolism byproduct
sound production
Creating audible vibrations
- animal featuresbeaks, scales, antlers, fur, ears
- animal partsappendage, forelimb, hind leg, hind legs, hindlegs
- animal traitsfur, tail, claws, teeth, wings
- aquatic adaptationsgills, fins, flippers, webbed feet, streamlined body
- Aquatic Healthwater quality, algae blooms, parasites, tank maintenance, water testing
- fish anatomygills, fins, tail, eye, pelvic fins
swim, swimming, swimmer, bladder, bladderwort, air bladder, swim bladders