Morphology Data of Tridentiger trigonocephalus
Identification keys
Main Ref. Reshetnikov, Y.S., 2003
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth

Description: two dark brown interrupted stripes on body; the lower stripe runs from snout through eyes along mid-body to caudal fin; the upper stripe runs from above eyes backward to below posterior end of second dorsal fin, and continues as a saddle on peduncle; black spot on upper posterior peduncle; pale-yellow vertical stripe along the base of pectoral fine; narrow yellowish stripes along the bases of dorsal and anal fins; Number of scales along lateral line: 56; nineteen scales in transverse row; median predorsal scales 23, do not reach eyes (end about half eye diameter behind eye); no scales on opercle and preopercle; dorsal fins VI, I 13; anal fin I 11; pectoral fine: 20; pelvic fin I 5, fraenum developed; gill opening restricted, about the height of pectoral base; shoulder girdle under gill cover smooth; teeth tricuspid (Ref. 94829).

Ease of Identification likely to be confused with closely related species.

Meristic characteristics of Tridentiger trigonocephalus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Fins number 2
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 7 - 7
Soft-rays total 12 - 14
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 10 - 11

Paired fins

Pectoral Attributes  more or less normal
Soft-rays   20 - 20
Pelvics Attributes  joint, cup-like
Position    thoracic  before origin of D1
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Froese, Rainer
Modified by Valdestamon, Roxanne Rei
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