Term Name: caudal fin principal ray
Synonyms: caudal principal lepidotrichium, caudal principal ray
Definition: Caudal fin lepidotrichium that is adjacent to a branched ray. Caudal principal rays may be segmented but unbranched and the main element forming the dorsal or ventral leading margin of the caudal fin or a ray that may be only segmented and branched and forms part of the middle-posterior region of the fin. A caudal principal ray is an unpaired median bone. There are 19 principal caudal rays, with 10 in the dorsal lobe and nine in the ventral lobe. The dorsal lobe rays articulate with hypurals 3-5.
Appears at: Unknown
Evident until: Adult (90d-730d, breeding adult)
Ontology: Anatomy Ontology [ZFA:0001585]

Relationships
is a type of: caudal fin lepidotrichium
has subtype: caudal fin principal ray 1 caudal fin principal ray 2 caudal fin principal ray 3 caudal fin principal ray 4 caudal fin principal ray 5 caudal fin principal ray 6 caudal fin principal ray 7 caudal fin principal ray 8 caudal fin principal ray 9 caudal fin principal ray 10 caudal fin principal ray 11 caudal fin principal ray 12 caudal fin principal ray 13 caudal fin principal ray 14 caudal fin principal ray 15 caudal fin principal ray 16 caudal fin principal ray 17 caudal fin principal ray 18 caudal fin principal ray 19

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