Morphology Data of Stolephorus insularis
Identification keys
Abnormalities
Main Ref. Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance males alike females
Different colors males alike females
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral fusiform / normal
Cross section compressed
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth sub-terminal/inferior
Type of scales cycloid scales
Diagnosis

Diagnosis: Body somewhat compressed, belly with 4-8 small needle-like pre-pelvic scutes; a small pre-dorsal spine in some specimens; maxilla tip pointed, reaching to or beyond hind border of pre-operculum, the latter concave, indented near maxilla tip; lower gillrakers 21 to 28; fine teeth on upper edge of hyoid bones; anal fin short, usually with 3 unbranched and 14-17 branched finrays, its origin below about middle of dorsal fin base; a double pigment line on back behind dorsal fin; tail deep yellow, at least in Indian specimens (Ref. 189). Of species with an indented pre-operculum, Stolephorus andhraensis has fewer gillrakers, 20-21, and S. ronquilloi has more gillrakers, 28-30; other species with a pre-dorsal spine also have a spine on the pelvic scute, like in S. dubiosus, S. baganensis and S. tri; hyoid tooth patches are present in S. commersonnii, but pre-operculum rounded, scutes usually 1-4, and in S. carpenteriae, but no pigment lines on back, anal origin under anterior part of dorsal fin base (Ref. 189).

Description: Body somewhat compressed (Ref. 189). Maxilla tip pointed, reaching to or beyond hind border of pre-operculum (Ref. 30573). Number of gillrakers on upper limb 16-20, gillrakers on lower limb 21-28 (Ref. 189, 122132). Anal-fin origin below dorsal-fin base (Ref. 30573). With 4-8 small needle-like pre-pelvic scutes, no post-pelvic scutes (Ref. 189, 30573).

Colouration: A double pigment line on back behind dorsal fin; tail deep yellow, at least in Indian specimens (Ref. 189, 30573).

Ease of Identification

Meristic characteristics of Stolephorus insularis

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
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 21 - 28
on upper limb 16 - 20
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 17 - 20

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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