Term Name: | specialized hemal arch and spine |
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Synonyms: | ha(pu), hemal arch (preural), specialized haemal arch and spine, specialized hemal arches and spines |
Definition: | Modified hemal arches and spines that support the caudal fin. In developing fish they articulate with preural 1, ural1 and ural2; in adults they articulate with the urostyle. |
Appears at: | Larval:Day 4 (96.0h-120.0h) |
Evident until: | Adult (90d-730d, breeding adult) |
Ontology: | Anatomy Ontology [ZFA:0000859] |
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