Stomatorhinus corneti Boulenger, 1899
Species overview
Small fish, body moderately elongate and deep, head slightly longer than body depth, much longer than deep, snout vertically truncate, hardly protruding mouth which is slightly subterminal; caudal peduncle short, deep. Brown above, whitish beneath.
Size observed: 96.5 mm SL, 111 mm TL.
S. corneti(measurements)
Taxonomic description
-Body moderately elongate, laterally compressed, cross section oblong-oval, body depth 24-30 % SL, greatest depth near origin of anal fin or between pelvic and anal.
-Head length 28-32 % SL; head depth 17-25 % SL, 74-90 % body depth.
-Outline of back straight or feebly curved, upper profile of head straight, underside of head concave, outline of belly slightly convex.
-Snout truncate, 16-22 % head length, 27-35 % postorbital length.
-Mouth 13-22 % head length, slightly subterminal, its edge below posterior nostril, upper jaw on a level with lower edge of base of pectoral fin or slightly below.
-Chin inconspicuous.
-Teeth notched, 9/10.
-Nostrils clearly separate, posterior nostril oval, anterior on a level with lower rim of the lens, posterior nostril close to edge of mouth.
-Eye diameter 6-11 % head length, 10-16 % postorbital length.
-Opercular cleft S-shaped, 27-39 % head length, 38-55 % head depth.
-Dorsal fin 17 fin-rays, base of D 18-24 % SL, anal fin 20 rays, base of A 22-27 % SL, origin of D behind origin of A, end of D more or less opposite end of A; predorsal length 60-65 % SL, preanal length 58-64 % SL.
-Pectoral fin obtusely pointed, extending to middle of pelvic fin. V is closer to P than to A.
-Caudal fin obtusely pointed, the scaled lobes rounded, extending over 1/3 of the fin. 48-50 scales in lateral line, only 28-30 with pores; 12 scales round caudal peduncle.
-Caudal peduncle 15-18% SL, its depth 5-7 % SL, 33-46 % its length.
-Coloration »Brown above, whitish below; fins colourless«.
Type locality
»Stanley Pool«, recently Pool Malebo (4° ‘ 02S 16° 03 ‘ E) Democratic Republic of Congo.
Distribution
»Congo basin (Lower Zaïre, Pool Malebo)«. Democratic Republic of Congo.