Term Name: specialized hemal arch and spine
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]

Relationships
is part of: caudal fin skeleton
is a type of: endochondral bone
has subtype: hypural hypurapophysis parhypural

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