Clariallabes longicauda (Boulenger, 1902)
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Family:  Clariidae (Airbreathing catfishes)
Max. size:  28 cm TL (male/unsexed)
Environment:  demersal; freshwater,
Distribution:  Africa: middle Congo River basin in Democratic Republic of the Congo, Congo-Brazzaville and Cameroon (Ref. 78218), Sanaga, Nyong and Woleu/Ntem in Cameroon and Ivindo and Nyanga in Gabon (Ref. 81644). Also reported from the Kienke (= Kribi) in Cameroon (Ref. 51193).
Diagnosis:  Dorsal spines (total): -0; Dorsal soft rays (total): 70-80; Anal soft rays: 60-70. Diagnosis: eyes with free orbital rim; dorsal and anal fins long, 62-72% SL (mean 68) and 45-61% SL (mean 55), respectively, but not fused to caudal fin; skull large and broad, width 71-86% (mean 78) skull length; external mandibular barbel more than half of skull length (Ref. 81644). Description: body slender and elongate (abdominal depth 8-18% SL, mean 12); pectoral and pelvic fin size decreases with increasing body size, pectoral fin ranging between 73% in small specimens to 45% in large specimens (as percentage of skull length); pectoral spine about half length of fin, with anterior margin more heavily serrated than posterior one; supraoccipital process pointed; barbels long, maxillary barbel more than 1.5 times skull length in large specimens (69-182% skull length, mean 112); premaxillary tooth plate about 5 times as long as broad; orbit with free margin (Ref. 81644). Coloration: body dark olive-brown dorsally, whitish ventrally; dorsal and anal fins darker, both fins frequently with a pale (reddish) margin, also observable in caudal fin (Ref. 81644). Preserved specimens: more uniformly brown (to greyish brown) slightly paler ventrally and with paler fins; caudal fin sometimes with a dark submarginal band (Ref. 81644).
Biology:  Remains of decayed plants and insects have been found in the stomach of a female specimen from central Congo (Ref. 78218).
IUCN Red List Status: Least Concern (LC); Date assessed: 16 February 2009 Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Sa-a, Pascualita - 18.04.94
Modified by: Geelhand, Dimitri - 20.03.13
Checked by: Sa-a, Pascualita - 10.05.94

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