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the caudal fin

См. также в других словарях:

  • caudal fin — the tail fin, aiding movement. Also called the uropterygium. The fin at the posterior end of the vertebral column (but in Centriscidae the hind end of the body rotates so that the caudal fin is ventral, and in some Trachipteridae the upper lobe… …   Dictionary of ichthyology

  • Caudal fin — Caudal Cau dal, a. [L. Cauda tail. Cf. {Coward}.] Of the nature of, or pertaining to, a tail; having a tail like appendage. [1913 Webster] The male widow bird, remarkable for his caudal plumes. Darwin. [1913 Webster] {Caudal fin} (Zo[ o]l.), the… …   The Collaborative International Dictionary of English

  • caudal fin — the terminal vertical fin of a fish. Also called tail fin. See diag. under fish. * * * …   Universalium

  • caudal fin — noun the tail of fishes and some other aquatic vertebrates • Syn: ↑tail fin • Hypernyms: ↑fin • Hyponyms: ↑heterocercal fin, ↑homocercal fin • Part Holonyms: ↑ …   Useful english dictionary

  • caudal fin ray count — usually only the principal or main rays are counted, the tiny rudimentary, often procurrent rays are not included. In fishes with branched rays, the principal count is the number of branched rays plus two. These rays are usually markedly larger… …   Dictionary of ichthyology

  • caudal fin — noun The tailfin of a fish and other aquatic vertebrates …   Wiktionary

  • caudal peduncle — the wrist like portion of the posterior part of the body between the end of the anal fin and the base of the caudal fin. Its length is measured between the insertion of the anal fin and the caudal flexure (the fold shown by the hind edge of the… …   Dictionary of ichthyology

  • Fin — Fin, n.[OE. finne, fin, AS. finn; akin to D. vin, G. & Dan. finne, Sw. fena, L. pinna, penna, a wing, feather. Cf. {pen} a feather.] 1. (Zo[ o]l.) An organ of a fish, consisting of a membrane supported by rays, or little bony or cartilaginous… …   The Collaborative International Dictionary of English

  • Fin ray — Fin Fin, n.[OE. finne, fin, AS. finn; akin to D. vin, G. & Dan. finne, Sw. fena, L. pinna, penna, a wing, feather. Cf. {pen} a feather.] 1. (Zo[ o]l.) An organ of a fish, consisting of a membrane supported by rays, or little bony or cartilaginous …   The Collaborative International Dictionary of English

  • Fin whale — Fin Fin, n.[OE. finne, fin, AS. finn; akin to D. vin, G. & Dan. finne, Sw. fena, L. pinna, penna, a wing, feather. Cf. {pen} a feather.] 1. (Zo[ o]l.) An organ of a fish, consisting of a membrane supported by rays, or little bony or cartilaginous …   The Collaborative International Dictionary of English

  • caudal flexure — the fold formed at the end of the caudal peduncle when the caudal fin is flexed to determine the position of the posterior edge of the hypural plates. This posterior edge is often difficult to determine as a point for measurement for standard… …   Dictionary of ichthyology

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