homocercal

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Related to homocercally: fin rays

homocercal

[‚häm·ə′sər·kəl]
(vertebrate zoology)
Pertaining to the caudal fin of certain fishes which has almost equal lobes, with the vertebral column terminating near the middle of the base.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.