Morphology Data of Schilbe tumbanus
Identification keys
Abnormalities
Main Ref. De Vos, L., 1995
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

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

Diagnosis: adipose fin always present; anterior nostrils closer to each other than posterior ones; snout reaching slightly beyond lower jaw; nasal barbel always reaching beyond orbit; eyes rather large (horizontal diameter 26,8-33,1% HL); inner side of pectoral spine feebly serrated (Ref. 43912).

Description: 8-10 branched pectoral fin rays; 38-53 branched anal fin rays; 43-47 non-fused vertebrae; 8-10 branchiostegal rays on one side of head; caudal peduncle longer than deep; nasal barbel at least reaches to posterior border of eye and at maximum to posterior border of opercle; maxillary barbel reaches at least to posterior border of opercle and at maximum to midway of pectoral spine; inner mandibular barbels short and never reach beyond center of eye; outer mandibular barbels at least reaching to posterior border of eye and at maximum to posterior opercle border; dorsal and/or pectoral spines sometimes provided with a filamentous prolongation; some specimens totally or partially lack pelvic fins (Ref. 43912). Schilbe tumbanus shows some affinities with the sympatric species S. grenfelli which also has the anterior nostrils closer to each other than the posterior ones, but S. tumbanus is easily distinguished from this species by the longer nasal barbel always reaching beyond the orbit, while never reaching beyond the posterior border of the eye in S. grenfelli (Ref. 43912).

Coloration: preserved specimens: head and back brown-black; flanks somewhat paler, sometimes more or less irregularly stained; belly ventrally whitish, laterally speckled; all fins more or less greyish speckled (Ref. 43912). In life: grey-bluish, with pale blue-green metallic reflections; back and head darker, paler ventrally; unclear, dark post-opercular spot; eye greyish golden with green reflection; fins greyish, more or less dark, especially dorsal, caudal and pectoral fins (based on Matthes 1964; Ref. 43912).

Ease of Identification

Meristic characteristics of Schilbe tumbanus

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 7 - 11
on upper limb 3 - 4
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0
Ventral  0
Spines total 1 - 1
Soft-rays total
Adipose fin present

Caudal fin

Attributes forked

Anal fin(s)

Fins number 1
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     1
Soft-rays   
Pelvics Attributes  
Position    abdominal
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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