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Ctenoid Scale

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ctenoid scale [′ten‚ȯid ‚skāl]
(vertebrate zoology)
A thin, acellular structure composed of bonelike material and characterized by a serrated margin; found in the skin of advanced teleosts.
Ctenoid Scale 

a variety of bony scale in bony fishes; the posterior margin of the scale bears a comb of small teeth or spines. Ctenoid scales are typical chiefly for higher bony fishes, such as the Perciformes, but they also occur in fishes of a lower organizational level (for example, in some Clupeiformes and Gadiformes). It is supposed that the spikes on ctenoid scales improve the hydrodynamic properties of the fish’s body.
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Larvae of northern sculpin have 35-36 myomeres, pelvic fins with one spine and two rays, a bony preopercular shelf, four preopercular spines, 3-14 irregular postanal ventral melanophores, few, if any, melanophores ventrally on the gut, and in larger specimens, two rows of ctenoid scales directly beneath the dorsal fins extending onto the caudal peduncle.
Description of early life history stages of the northern sculpin ... by Cartwright, Rachael L. / Fishery Bulletin
 
 
 
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