Channallabes ogooensis Devaere, Adriaens & Verraes, 2007
Channallabes ogooensis
photo by RMCA / Mark Hanssens

Family:  Clariidae (Airbreathing catfishes)
Max. size:  24.4 cm SL (male/unsexed)
Environment:  benthopelagic,
Distribution:  Africa: upper Ogowe River in Gabon (Ref. 58516, 81644).
Diagnosis:  Dorsal spines (total): -0; Dorsal soft rays (total): 100-113; Anal spines: -0; Anal soft rays: 85-102; Vertebrae: 84-87. Diagnosis: large, well pronounced supraorbital process present on infraorbital IV, reaching rostral border of eye; fenestra between scapulo-coracoid and cleithrum present; no contact between entopterygoid and quadrate; pale spot present on skull roof between anterior and posterior fontanel; low number of dorsal (100-113) and anal (85-102) fin rays; pectoral spine only frequently serrate on posterior margin (Ref. 81644). Description: body elongated, abdominal depth 5.7-7.5% SL (mean 6.9); long dorsal and anal fins, continuous with caudal fin; distance between supraoccipital process and dorsal fin 9.3-13.1% SL (mean 11.2); pectoral fins present, length between 52.2-85.8% skull length; pectoral spine serrations only frequent and distinct on posterior margin; pelvic fins absent; skull short, 12.0-13.8% SL (mean 13.0); skull width 68.4-73.4% skull length; skull roof (exposed bony part in between bulging jaw muscles) very narrow, 16.1-32.9% (mean 26.0) skull length; jaw muscles hypertrophied and bulging; eyes bordered by small infraorbital bones, of which the postorbital one has a plate-like outgrowth and bears a supraorbital process reaching rostral border of eye; eyes small, without free orbital rim; lower lip clearly shorter than upper lip (Ref. 81644). Coloration: in life: body brown, anterior part gradually fades to a paler ventral side; a paler line in the middle, connecting the different pores of the lateral line system; alcohol preserved specimens have a paler appearance; well-defined pale spot on skull roof (Ref. 81644).
Biology:  Maximum total length reported 223mm (Ref. 81644).
IUCN Red List Status: Data deficient (DD); Date assessed: 16 February 2009 Ref. (120744)
Threat to humans:  harmless
Country info:   

Entered by: Boden, Gert - 30.07.07
Modified by: Musschoot, Tobias - 15.09.17

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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