Morphology Data of Stolephorus indicus
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 elongated
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 slender, elongate, rather round in cross-section, belly rounded, with 2-6 small needle-like pre-pelvic scutes; maxilla tip pointed, reaching to or only just beyond front border of pre-operculum; hind border of pre-operculum convex, rounded; lower gillrakers 20-28; isthmus muscle tapering evenly forward to hind border of branchial membrane; pelvic fin tips not reaching to below dorsal fin origin; anal fin short, with usually 3 unbranched and 16-18 branched finrays, its origin below centre of dorsal fin base; body light transparent fleshy brown, with a silver stripe down flank; no dark pigment lines on back between head and dorsal fin (Ref. 189). Other species with such a short maxilla are Stolephorus advenus, with 7 pre-pelvic scutes, and S. pacificus, with 35-38 gillrakers; maxilla to or almost to hind border of pre-operculum in other Stolephorus species (Ref. 189).

Description: Body slender, elongate, rather round in cross-section, belly rounded (Ref. 189). Tip of upper jaw bluntly pointed; maxilla short, not reaching to gill opening, only to front margin of preopercle (Ref. 2871, 5430, 30573). Isthmus continuous, no silvery plate (Ref. 2871). Lower gill rakers 20-28 (Ref. 189, 5430). Pelvic-fin tip not reaching to dorsal-fin origin; anal-fin origin below dorsal-fin base; Dorsal fin with 3 unbranched and 12-14 branched rays; anal fin with 3 unbranched and 16-18 branched rays; pectoral fin with 1 unbranched and 12-15 branched rays; pelvic fin with 1 unbranched and 6 branched rays (Ref. 5430, 30573). Scales: 38-42 lateral line scales (Ref. 5430). With 2-6 small needle-like pre-pelvic scutes, no post-pelvic scutes (Ref. 189, 5430, 30573).

Colouration: Body light transparent fleshy brown, with a silver stripe down flank; no dark pigment lines on back between head and dorsal fin (Ref. 189).

Ease of Identification

Meristic characteristics of Stolephorus indicus

Lateral Lines Interrupted: No
Scales on lateral line 38 - 42
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 20 - 28
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 0 - 0
Soft-rays total 15 - 17
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 19 - 21

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   13 - 16
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Spines     0
Soft-rays   7 - 7
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