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Definition of Term

(English) Folds of skin supported by cartilaginous tissue in elasmobranchs and by bony rays in bony fishes. Used for locomotion, display, and sometimes specialized functions such as fertilization. (See also: fin rays, median fins, paired fins)
(French) Feuillets cutanés supportés par des tissus cartilagineux chez les élasmobranches et par des rayons osseux chez les poissons osseux. Utilisées pour la locomotion, l’exposition, et quelquefois pour des fonctions spécialisées telles que la fécondation. (See also: fin rays, median fins, paired fins)
(Portuguese) Pregas de pele suportadas por tecido cartilagíneo nos elasmobrânquios e por raios ósseos nos peixes ósseos. Usualmente utilizadas para a locomoção, nas paradas nupciais e até na fertilização. (See also: fin rays, median fins, paired fins)

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