Campylomormyrus luapulaensis (David and Poll, 1937)
Species overview
Medium sized fish, body relatively short and deep, head trunk-shape snouted, snout long and deep, strongly compressed, with rather long barbel. Uniform dark brown, two blackish bands between unpaired fins. Size observed: 161 mm SL, 178 mm LT.
C. luapulaensis(measurements)
Taxonomic description
-Body moderately elongate, laterally compressed, body depth about 28 % SL, slowly decreasing from unpaired fins to head, greatest depth close to unpaired fins.
-Head short, measured without snout 19 % SL, its depth 22 % SL, snout inclusive, 80 % body depth.
-Outline of back slightly convex, upper profile of head strongly convex, underside of head strongly concave, outline of belly slightly convex.
-Snout or rostrum long, about 180 % postorbital length, its minimum depth is 5-6 times in its length, or 3 times in its depth at the level of the nostrils. The mouth is small, 7 % snout length, directed downward, edge of mouth far away from nostrils, upper jaw well below head. (The extreme shape of the snout changes with age/size of the fish, in juveniles it is much less obvious).
-Chin with submental swelling and a thick barbel, longer than diameter of eye. (Shape and number of teeth not indicated in original description.) Both nostrils are oval, separate, the anterior situated below the posterior which is somewhat more than one eye diameter away from the eye, axis of nostrils runs more or less parallel to axis of head.
-Eye medium sized, 32 % postorbital length in diameter.
-Opercular cleft straight, steep, about 39 % head depth.
-Dorsal fin 29, anal fin 33 fin-rays, base of D 20 % SL, base of A 26 % SL, D originating well behind origin of A, ending before end of A. Predorsal length 64 % SL, preanal length 57 % SL.
-Pectoral fin obtusely pointed, extending to tip of pelvic fin which is closer to P than to A.
-Caudal fin with short scaled lobes and pointed membranes. 82 scales in lateral line, 16 around caudal peduncle. Length of caudal peduncle about 15 % SL, its depth 6 % SL, about 43 % its length.
-Coloration »Uniform dark brown, with two blackish bands between D and A, fins as dark as body. (Juveniles may have more obvious markings.)
Type locality
»Kabunda«, province of the Democratic Republic of Congo (12° 13 ‘ S 29° 23 ‘ E)
Distribution
Upper Luapula (Democratic Republic of Congo)