Term Name:	opercular flap
Synonyms:	gill cover, gill slit, opercular apparatus, opercular cover, operculum
Definition:	A large flap, covered by integument, supported by several flat bones, actuated by muscles, found on the side of the head covering the gill chambers.
Appears at:	Unknown
Evident until:	Adult (90d-730d, breeding adult)
Ontology:	Anatomy Ontology [ZFA:0000555]

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