Morphology Data of Stegastes insularis
Identification keys
Main Ref. Allen, G.R. and A.R. Emery, 1985
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral short and / or deep
Cross section oval
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales cycloid and ctenoid scales

Diagnosis: Scales of head and body finely ctenoid, few cycloid may be present on ventral of head and on snout. Pale blue-gray to charcoal in color with dusky gray scale margins, appearing as series of narrow transverse bands. The posteriormost part of body, caudal peduncle, caudal fin and posterior part of dorsal fin are bright yellow; suborbital bluish and lavender. An elongate black patch with narrow blue margin is between 1st and 4th dorsal spines. The pectoral fins are translucent with a suffusion of yellow. A small black spot is at the base of the uppermost rays of the pectoral fin (Ref. 510). Body depth 1.9-2.1 in SL (Ref. 90102).

Ease of Identification

Meristic characteristics of Stegastes insularis

Lateral Lines 1 Interrupted: No
Scales on lateral line 19 - 21
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 2.5 - 2.5
Scale rows below lateral line 11 - 12
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 10 - 15
on upper limb 6 - 10
total 16 - 25


Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 12 - 12
Soft-rays total 15 - 17
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 11 - 13

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   19 - 21
Pelvics Attributes  more or less normal
Position    thoracic  before origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
Modified by Olisa, Kristine Elaine Paz
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