Morphology Data of Stolephorus commersonnii
Identification keys
Abnormalities
Main Ref. Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988
Appearance refers to Male; Female
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 more or less straight
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 a little rounded, with 0-5 small needle-like pre-pelvic scutes; maxilla tip pointed, reaching to or a little beyond hind border of pre-operculum, the latter convex, rounded; lower gillrakers usually 23 to 28; small teeth present on upper edge of hyoid bones; isthmus muscle tapering evenly forward to hind border of branchial membrane; pelvic fin tips reaching to below anterior dorsal finrays; anal fin short, with usually 3 unbranched and 18-19 branched finrays, its origin below second half of dorsal fin base; body light transparent fleshy brown, with a silver stripe down flank; a pair of dark patches behind occiput, followed by a pair of dark lines to dorsal fin origin (Ref. 189). It closely resembles Stolephorus apiensis of Fiji and Samoa, which lacks pigment lines before the dorsal fin; and S. brachycephalus of Papua New Guinea, which has more anal finrays, no hyoid teeth, and more scutes; Stolephorus waitei has characteristic spots on the lower part of the head, and the pelvic fins do not reach to the dorsal fin origin, as also in S. chinensis; other Stolephorus species have the hind border of the pre-operculum concave near the maxilla tip (Ref. 189).

Description: Body somewhat compressed, belly a little rounded (Ref. 189). Snout prominent; maxilla long, reaching to gill opening (Ref. 2871, 30573). Isthmus continuous, no silvery plate (Ref. 2871). Number of gill rakers on upper limb 17-21, on lower limb 23-28 (Ref. 122132). Pelvic-fin tip reaching beyond dorsal-fin origin; anal-fin origin below dorsal-fin base (Ref. 30573). With 0-5 small needle-like pre-pelvic scutes; no post-pelvic scutes (Ref. 189, 30573).

Colouration: Body light transparent fleshy brown, with a silver stripe down flank; a pair of dark patches behind occiput, followed by a pair of dark lines to dorsal fin origin (Ref. 189).

Ease of Identification

Meristic characteristics of Stolephorus commersonnii

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 23 - 28
on upper limb 17 - 21
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 21 - 22

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 )
Entered by Binohlan, Crispina B.
Modified by Boden, Gert
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17