swim-bladder
Internal fish balloon
A swim-bladder is a gas-filled sac in bony fish that controls buoyancy, allowing them to rise, sink, or hover at a given depth without expending energy swimming.
Also called an air bladder.
The organ evolved into lungs in land vertebrates, making it a key structure in evolutionary history.
Capacity to stay buoyant
- neutral buoyancyBalanced submersion state
- gas exchangeTransfer of respiratory molecules
- water columnVertical section of sea
- upthrustForceful upward push
Bony, ray-finned fish
- bony fishFish with calcified skeleton
- ichthyologyScientific study of piscine life
- gillsAquatic respiratory organs
- finsSwimming appendages
scales · aquatic · freshwater · marine · carp · perch · cod · trout
Respiratory membrane pocket
- organBody's working component
- oval windowMiddle ear opening
- epitheliumTissue covering body surfaces
- connective tissueSupportive biological matrix
Percussive rhythm-making
- acousticRelating to sound
- resonanceAmplified oscillation at natural frequency
- vibrationRapid oscillating movement
- communicationExchanging ideas or information
mating call · hearing · amplification · otolith · auditory · croaking · grunting · sound production
floatation
Capacity to stay buoyant
- neutral buoyancyBalanced submersion state
- gas exchangeTransfer of respiratory molecules
- water columnVertical section of sea
upthrust · inflation · deflation · hovering · equilibrium
teleost
Bony, ray-finned fish
- bony fishFish with calcified skeleton
- ichthyologyScientific study of piscine life
- gillsAquatic respiratory organs
fins · scales · aquatic · freshwater · marine · carp · perch · cod · trout · bass
air sac
Respiratory membrane pocket
- organBody's working component
- oval windowMiddle ear opening
- epitheliumTissue covering body surfaces
drumming
Percussive rhythm-making
- acousticRelating to sound
- resonanceAmplified oscillation at natural frequency
- vibrationRapid oscillating movement
communication · mating call · hearing · amplification · otolith · auditory · croaking · grunting · sound production · vocalization