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File:Fish fin anatomy Salmonidae.svg. ... This template also does not apply to postage stamp designs published by the United States Postal Service since 1978.
A fish can have up to three dorsal fins. The dorsal fins serve to protect the fish against rolling, and assist it in sudden turns and stops. In anglerfish, the anterior of the dorsal fin is modified into an illicium and esca, a biological equivalent to a fishing rod and lure; The bones that support the dorsal fin are called pterygiophores.
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The pectoral fins developed into forelegs (arms in the case of humans) and the pelvic fins developed into hind legs. [50] Much of the genetic machinery that builds a walking limb in a tetrapod is already present in the swimming fin of a fish. [51] [52] Comparison between A) the swimming fin of a lobe-finned fish and B) the walking leg of a ...
The dorsal fin has 8-12 well-spaced and isolated spines in front of it and has 12 spines and 12-25 soft rays. The anal fin has 21-25 soft rays [ 4 ] while the caudal fin is rounded. [ 3 ] The most commonly encountered color of A. maculatus is mottled brown to reddish brown with irregular black or brown spots.
A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found in most fish, in mammals such as whales, and in extinct ancient marine reptiles such as ichthyosaurs ...
Fins located on the median line of the fish; the dorsal, anal and caudal fins. mediolateral Between the middle and the sides. melanophore A cell (chromatophore) containing melanin or other black pigment. mesocoracoid A bone of the pectoral arch or shoulder girdle. mesopelagic Refers to the region of the open ocean between 200 m and 1000 m in depth.
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