Morphology Data of Synodontis robbianus
Identification keys
Main Ref. Paugy, D. and T.R. Roberts, 2003
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

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

Diagnosis: gill slits not extending ventrally beyond pectoral-fin insertions; post-orbital length at least 60% of snout length; maxillary barbels longer than head, unbranched, without tubercles and bordered by a short but distinct black basal membrane; outer mandibular barbels with few short, simple and rather thin ramifications, branches of inner mandibular barbels also simple, short and few, but thicker and tuberculate; mandibular teeth moderately developed, numbering 20-27 (20 in the holotype); denticulations of pectoral-fin spines finer and more dense on outer than on inner margin; dorsal-fin spine smooth anteriorly, except for some apical denticles; humeral process about twice as long as deep, granulose, pointed and distinctly keeled ventrally; adipose fin moderately developed and distinctly separated from rayed dorsal fin; adipose-fin base long, its length over 3 times the distance between rayed dorsal- and adipose fin; only dorsal body region spotted (Ref. 57223).

Coloration: dorsal regions brownish, darker than ventral parts; anal fin, as well as pectorals and pelvics, blackish; back and adipose fin covered with some large black spots; dorsal and caudal fins marked with some smaller black spots (Ref. 57223).

Ease of Identification

Meristic characteristics of Synodontis robbianus

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 6
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 14
on upper limb 4


Dorsal fin(s)

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

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0
Soft-rays total

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     0
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Musschoot, Tobias
Modified by Musschoot, Tobias
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