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Learn about the external and internal anatomy of fish, the different skeletal types, the fins, the gills, the heart, the eyes, and the lateral line system. Compare the anatomy of cartilaginous and bony fish, and how it adapts to the aquatic environment.
The middle ear contains three tiny bones (ossicles) that transfer sound energy from the eardrum to the inner ear: malleus, incus, and stapes. The incus is the anvil that connects the malleus (hammer) to the stapes (stirrup), and is part of the lever system that amplifies sound pressure.
The Weberian apparatus is a structure that connects the swim bladder to the auditory system in some fishes. It consists of bones derived from the first four vertebrae and acts as an auditory amplifier. Learn about its anatomy, embryology and evolutionary history.
Learn how fish exchange gases using gills, skin, lungs, or swim bladder, and how they have evolved different breathing mechanisms. Find out how fish have a countercurrent flow system of blood and water in their gills to enhance oxygen uptake.
Fish maw is the name for the swim bladder, a gas-filled organ that helps many bony fish control their buoyancy and depth. Learn about the structure, function, evolution and diversity of swim bladders, and how they are related to sound production and detection.
The ear canal is a pathway from the outer ear to the middle ear, about 2.5 cm long and 0.7 cm wide. It has a cartilaginous and a bony part, and can be affected by various diseases and disorders, such as cerumen impaction, otitis externa, and ear mites.
The diagram shows the shape and location of most of these components: antihelix forms a 'Y' shape where the upper parts are: Superior crus (to the left of the fossa triangularis in the diagram) Inferior crus (to the right of the fossa triangularis in the diagram) Antitragus is below the tragus; Aperture is the entrance to the ear canal
The fish are harvested and sold for food in local markets. Several other species of family Ambassidae were formerly classified in genus Chanda, including the well-known Indian glassy fish, Parambassis ranga, the "glassfish" of the aquarium trade; and the high-finned glass perchlet, Parambassis lala, once considered the type species of the genus.
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