Knowra Ostariophysi Ostariophysi Ostariophysi is a major clade of teleost fishes that includes carps, catfishes, characiforms, and several related groups. Its members are noted for specialized adaptations such as the Weberian apparatus and alarm substance.
Teleostei : Teleostei is the largest infraclass of ray-finned fishes, comprising most living fish species. Ostariophysi is one of the major lineages within this broad radiation.
Cypriniformes : Cypriniformes is a fish order that includes carps, minnows, loaches, and their relatives. It is one of the largest freshwater branches of Ostariophysi.
Ostariophysan hearing : Ostariophysan hearing is the enhanced transfer of sound vibrations to the inner ear in fishes with a Weberian apparatus. The apparatus couples swim-bladder vibrations to auditory structures.
Ostariophysan evolution : Ostariophysan evolution is the diversification of this fish clade from early lineages into numerous freshwater and marine forms. Its history explains how the major living orders became distinct.
Weberian apparatus : The Weberian apparatus is a chain of small bones linking the swim bladder to the inner ear in certain fishes. This distinctive hearing structure characterizes most ostariophysans.
Siluriformes : Siluriformes is the fish order comprising catfishes, distinguished commonly by barbels and scaleless or armored bodies. Catfishes form a major and morphologically diverse ostariophysan order.
Swim bladder : The swim bladder is a gas-filled organ that helps many bony fishes control buoyancy. In many ostariophysans, it also acts as a sound-producing or sound-receiving structure.
Gonorynchus : Gonorynchus is a genus of slender marine fishes in the order Gonorynchiformes. It represents a living lineage near the base of the ostariophysan tree.
Otophysi : Otophysi is the ostariophysan group comprising cypriniforms, characiforms, siluriforms, and gymnotiforms. It contains the best-known living branches of Ostariophysi.
Characiformes : Characiformes is a fish order including tetras, piranhas, and African characins. Its members represent a prominent branch of Ostariophysi, especially in fresh waters.
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