Synodontis ansorgii Boulenger 1911

Diagnosis: gill slits not extending ventrally beyond pectoral-fin insertions; post-orbital length at least 60% of snout length; maxillary barbels unbranched, longer than head, without tubercles and bordered by a black basal membrane; outer mandibular barbels with short and simple ramifications; branches of inner mandibular barbels subdivided/dichotomous but not tuberculate; mandibular teeth numbering 49-82 (64 in the lectotype); denticulations of pectoral-fin spines stronger on inner than on outer margin; dorsal-fin spine smooth anteriorly; only first branched dorsal-fin ray prolonged into a filament; humeral process triangular and granulose, deep, not keeled ventrally; adipose fin normally developed, truncate posteriorly and distinctly separated from rayed dorsal fin; eyes large (Ref. 57223).Coloration: body entirely brownish (including ventral areas); numerous small black spots, particularly on head, but sometimes also on sides and fins (Ref. 57223).

Oviparous (Ref. 205). Distinct pairing during breeding (Ref. 205).

Dorsal spines (total): 1; Analspines: 0

Maximum TL was recorded at 27.6 cm (Ref. 57223). Oviparous (Ref. 205).

fisheries:

Synodontis ansorgii is a species of upside-down catfish native to rivers of Guinea, Guinea-Bissau and Sierra Leone. This species grows to a length of 27.6 centimetres (10.9 in) TL.