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Results for “scale”

Ichthyological terms, not general ones.

Species 140Articles 12Glossary 36

  • scale

    Dermal, plate-like structure covering the body in many fishes.

    Used in 653 profiles

  • scale count

    Count of a given range of scales. Used in taxonomical studies to differentiate and identify taxa.

    Used in 11 profiles

  • elasmoid scale

    Common scale-type. Found in all teleosts, and often separated into cycloid and ctenoid forms.

  • placoid scale

    Tooth-shaped scale-type found in certain fishes, e.g., sharks, rays. Structurally homologous with vertebrate teeth.

  • lateral scale rows

    The number of more-or-less vertically-arranged scale rows present between the upper end of the gill opening and the caudal fin base. Sometimes referred to as vertical scale rows and used in meristic counts when the lateral line is absent, incompletely pored or otherwise difficult to distinguish.

    Used in 9 profiles

  • pored scale

    A scale possessing a visible pore, e.g. a lateral line scale.

    Used in 38 profiles

  • transverse scale row

    Number of scales in the diagonal row between the orgins of dorsal and anal fins in a fish specimen, excluding the lateral line scales.

    Used in 10 profiles

  • cardioid scale

    A scale possessing a distinct notch on the posterior margin.

  • caudal peduncle scale count

    Count often used in species descriptions and comparisons, made by counting the number of scales present around the narrowest part of the caudal peduncle.

  • ctenoid scale

    Scale type having ctenii on the posterior edge and a consequent rough texture.

    Used in 22 profiles

  • cyclo-ctenoid scale

    Scale type with morphology intermediate between cycloid and ctenoid, possessing reduced ctenii that are smooth to the touch. Common to certain groups of fishes, e.g., characids.

    Used in 3 profiles

  • cycloid scale

    Scale type having a smooth margin.

    Used in 27 profiles

  • ganoid scale

    Hard, shiny, enamel-like scale. Found in gars, bichirs and reedfishes, for example.

  • lateral line scale

    Any visibly-pored scale of the lateral line system, counts of which are often used as an identifying feature.

    Used in 164 profiles

  • predorsal scale

    Any of the scales lying on the dorsal midline between the back of the skull and insertion/origin of the dorsal fin.

    Used in 101 profiles

  • squamation

    The arrangement of scales on the body; the condition of possessing scales; scaled; scalation.

    Used in 12 profiles

  • axillary process

    A modified, often elongate, scale or group of scales located at the base of the pectoral or ventral fins in some fishes.