Synodontis robbianus Smith, 1875
Synodontis robbianus
photo by Hippocampus-Bildarchiv

 Family:  Mochokidae (Squeakers or upside-down catfishes)
 Max. size:  10.5 cm SL (male/unsexed)
 Environment:  benthopelagic; pH range: 6 - 7.80000019073486; dH range: 10 - 25,
 Distribution:  Africa: lower Niger, Niger delta and Cross River in Nigeria (Ref. 57223).
 Diagnosis:  Dorsal spines (total): 1; Anal spines: -0. 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).
 Biology:  Maximum TL was recorded at 13.8 cm (Ref. 57223). Oviparous (Ref. 205).
 IUCN Red List Status: Vulnerable (D2) (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Sa-a, Pascualita - 22.04.94
 Modified by: Musschoot, Tobias - 13.03.15
 Checked by: Sa-a, Pascualita - 17.05.94

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