- uropterygia
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plural of uropterygium
Dictionary of ichthyology. 2009.
uropterygia
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uropterygium — (plural uropterygia)) caudal fin (the tail fin, aiding movement. 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… … Dictionary of ichthyology
