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Results for “fin”

Ichthyological terms, not general ones.

Species 418Articles 23Glossary 132

  • palmate

    Having a shape similar to that of a human hand with fingers extended; having webbed digits as in many water birds.

  • pectoral

    Of, relating to or located on the chest, breast, or thorax; used to refer to a single pectoral fin in relation to fishes.

    Used in 263 profiles

  • pectoral girdle

    Bony or cartilaginous structure supporting the forelimbs or anterior fins in vertebrates.

    Used in 26 profiles

  • pelvic disc

    Disc-shaped modification of the pelvic fins, which are often fused, used to adhere to surfaces via suction. Present in certain fishes, especially members of the family Gobiidae. Also known as sucking disc.

    Used in 31 profiles

  • pelvic girdle

    Bony or cartilaginous structure supporting the pelvic fins. Sometimes fused with the pectoral girdle.

    Used in 9 profiles

  • postdorsal

    Located posterior to the dorsal fin.

    Used in 23 profiles

  • precaudal

    In front of the caudal fin or posterior end of the body.

    Used in 13 profiles

  • predorsal

    Area or region anterior to the first dorsal fin.

    Used in 75 profiles

  • predorsal length

    Distance between the tip of the upper jaw and inseryion/origin of first dorsal fin..

    Used in 19 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

  • procurrent

    Of fin rays, inclined forwards or placed progressively farther forwards.

    Used in 1 profile

  • pterygiophore

    Bony or cartilaginous structures via which the rays of the median fins articulate and connect to the body.

    Used in 31 profiles

  • radial

    In ichthyology, a bony or cartilaginous support for a fin ray or spine.

    Used in 15 profiles

  • ray

    Any of the bony spines supporting the membrane of a fish's fin including both spines and soft rays.

    Used in 793 profiles

  • scapula

    Paired bone attached to the pterygials, actinosts or radials of the pectoral fin. Articulates ventrally with the coracoid and anteriorly with the cleithrum.

  • segmented ray

    Fin ray divided into short sections.

    Used in 2 profiles

  • shimmies

    Behavioural symptom that indicates deteriorating water quality or disease in which an individual appears listless with fins normally clamped to the body and displays an abnormal, 'shimmying' swimming action. Particularly typical in poeciliid livebearers.

  • simple ray

    Unbranched and unsegmented soft fin ray.

    Used in 20 profiles

  • soft ray

    Segmented fin ray which is flexible and usually branched.

    Used in 17 profiles

  • spine

    See fin spine; also a hard, pointed, protective outgrowth or process elsewhere on the body, e.g., a preopercular spine; the spinal column of a vertebrate.

    Used in 414 profiles