How To Use Ctenoid In A Sentence
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Cycloid Fish Scale - The primary types of fish scales include placoid, cosmoid, ganoid, ctenoid, and cycloid scales.
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Pirate perch is a stout, dark-colored fish, with a single dorsal fin and ctenoid scales on the head and body.
Think Progress » “When I caught a 7.5 pound perch in my lake”
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Triplefin blennies are also unique among blennies in that they possess ctenoid (rough-edged) scales.
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Thin, translucent, and lacking enamel as well as dentine, these modern structures are known as cycloid and ctenoid scales.
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Ctenoid Fish Scale - Three general types of ctenoid scales have been categorized, but each type is composed of two key sections; a rigid surface layer chiefly consisting of crystallized calcium salts and a deeper layer that is formed by collagen-type fibrils.
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Its scales are ctenoid, and it has no preorbital scales.
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The scales may be cycloid, ctenoid, or absent and the lateral line is absent.
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I tried to follow Agassiz's scheme of division into the order of ctenoids and ganoids, with the result that I found one of my species of side-swimmers had cycloid scales on one side and ctenoid on the other.
Louis Agassiz as a Teacher; illustrative extracts on his method of instruction
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Triplefin blennies are also unique among blennies in that they possess ctenoid (rough-edged) scales (except for three species).
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The distinction between the ctenoid scale types, therefore, is primarily based upon their form.
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Another kind of scale is the ctenoid which are thin flexible scales where the posterior end has comb-like teeth, and are believed to reduce drag on the fish when swimming in the water.
CreationWiki - Recent changes [en]
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Basic ctenoid scales, on the other hand, exhibit ctenii, which are formed as separate bony growths distinct from the main body of the scale.
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The body is covered with small ctenoid scales that extend well onto the dorsal and anal fins.
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Actinopterygians may have ganoid, cycloid, or ctenoid scales, or no scales at all in many groups.
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E. llajara differs from E. lanceolatus in having ctenoid scales on the sides of the body, and small black spots on the head and dorsal part of the body.
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Thin, translucent, and lacking enamel as well as dentine, these modern structures are known as cycloid and ctenoid scales.
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So long as the strongly-armed ganoidal order prevailed in nature, the sharks were furnished with massive crushing teeth; but when the ganoids waned in creation, and the soft-scaled cycloid and ctenoid orders took and amply filled the place which they had left vacant, the well known modern form of sharks 'teeth was introduced, -- a form much rather suited for cutting soft bodies than for crushing hard ones.
The Testimony of the Rocks or, Geology in Its Bearings on the Two Theologies, Natural and Revealed
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I tried to follow his scheme of division into the order of ctenoids and ganoids, with the result that I found one of my species of side-swimmers had cycloid scales on one side and ctenoid on the other.
