Ctenoid scales can be further subdivided into three types: Crenate scales, where the margin of the scale bears indentations and projections. Spinoid scales, where the scale bears spines that are continuous with the scale itself. True ctenoid scales, where the spines on the scale are distinct structures.

Definition of ctenoid. : having the margin toothed ctenoid scale also : having or consisting of ctenoid scales ctenoid fishes.

5 Water organisms 6 C78 Dogfish Placoid Scales. W. m . C79 Ctenoid. Marine fish Scale, hellfeld photomicrograph.

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These are soft and flat dermal plates whose groove-like part is firmly attached and hind Example sentences from the Web for ctenoid The cycloid and ctenoid scales of Teleosteans (see p. 105) are thin plates coated with epidermis. The Vertebrate Skeleton | Sidney H. Reynolds The exoskeleton is sometimes absent but generally consists of overlapping cycloid or ctenoid scales. Five types of dermal scales have been identified in fishes : cosmoid, placoid, ganoid, cycloid and ctenoid. Ctenoid scales have a toothed outer edge, and are usually found on fish with spiny fin rays, such as bass and crappie.

- Marine fish scale, brightfield photomicrograph. Ctenoid scale, Tunna, Thunna sp. Of or pertaining to any of very many fish, of the order Perciformes, that have fin spines, a swim bladder without a duct, usually ctenoid scales, and 17 or fewer  ctenoid.

Of or pertaining to any of very many fish, of the order Perciformes, that have fin spines, a swim bladder without a duct, usually ctenoid scales, and 17 or fewer 

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Ctenoid scales are composed of two main regions, a surface layer having a hard shell resulting from crystallized calcium salts, and a deeper layer that is built with collagen-type fibrils. Three generalized types of ctenoid scales have been categorized.

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30 juni 2012 — Bild 1.3.3. a) Fjäll av cykloid typ från mört. b) Fjäll av ctenoid typ från gös. I. Age and spawning frequency determined from scales and oto-. Scales of the Barramundi fish are ctenoid. Cook Baked fish (Bhetki) in the comfort of your home with BetterButter.
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a fish scale which is thin and shows concentric lines of growth, without serrations on the margin.

Ctenoid scales are scales with comb-like edge found in higher order teleost fishes, such as perch and sunfish. Cteni are the tiny teeth on the posterior margin of the scale.
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In ctenoid scales, found on bass, perch, some flounders, and most spiny-finned fishes, the focus is near the rear edge of the scale and circuli here ar obscured by  

While whole ctenoid scales having a spiny posterior field with several rows of fully-developed ctenial spines are only reported in 3 species of the percomorph genera Epigonus and Mugil, transforming ctenoid scales have been found in perciforms, scorpaeniforms, and pleuronectiforms . 2021-04-14 · ctenoid scale In bony fish, a type of scale that has many tiny, tooth-like processes (ctenii) in the posterior, or outer segment. The word is derived from the Greek kteis, ‘comb’. Source for information on ctenoid scale: A Dictionary of Zoology dictionary.

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Gonoid. Point out the focus, circuli, and annuli on one of the scale diagrams.

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