Campylomormyrus alces (Boulenger, 1920)
Original Published Description:
Taken from Boulenger (1920):
Depth of body 3 to 3½ times in the total length, length of head 5 or 6 times. Tubular snout short and highly compressed, directed downward almost perpendicular to the axis of the body; length of snout about 1 1/2 times that of the post-ocular head distance, its smallest vertical diameter 2½ to 3 times its length and approximately equal to the diameter of the eye; fleshy chin barbel tapers to a fine point, its length equal to the diameter of the eye or a little less; teeth small, truncated, 3 or 4 in the upper jaw, 4 on the bottom. Dorsal 31-34, beginning above the sixth to eighth ray of the anal, the length of its base equaling about two-thirds of its distance from the head. Anal 33-35, nearer the tail than the base of the ventral. Pectoral pointed, as long as the head, extending back beyond the ventral, measuring twice its length. Caudal fin scaly at the base, lobes long and pointed. Caudal peduncle 3 times as long as high, as long as head or slightly shorter. 70 to 75 scales along the lateral line, 16-18/16-18 in transverse series on the body, 14-15/12-13 between the dorsal and anal, 12 around caudal peduncle. Dark brown above, silvery white below; dorsal fin blackish in front, anterior margin extended into a yellow oblique band extending from its base in the lateral line; a black band on each lobe of the caudal fin. Total length from 255 to 330 millimeters. Differs from G. elephas [Campylomorymyrus elephas] by its much shorter snout.
Electric Organ Discharge
Ecology and Distribution
Upper Congo Rapids from Boyoma Falls (Stanley Falls), Kisangani, D.R. Congo to Ubundu (ex-Ponthiereville). Also some records from Stanley Pool and Lower Congo at Matadi. Poll (1967) reports and illustrates this species (or something resembling it) from the rapids of the Luachimo River near Dundo, Angola. See occurrence records on FishBase.
- Gnathonemus campylomormyrus (synonym)
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|Roberts & Stewart 1976.pdf||2731.9||2010-12-07T20:24:40Z|