caudal fin

Noun
  1. The tail of fishes and some other aquatic vertebrates (synset 102469588)
    is a type of: fin - organ of locomotion and balance in fishes and some other aquatic animals
    subtypes:
    • heterocercal fin - a tail fin with unequal lobes in which the vertebral column turns upward into the larger lobe as in sharks
    • homocercal fin - symmetrical tail fin extending beyond the end of the vertebral column as in most bony fishes
    is a part of: fish - any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills
    same as: tail fin

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