From Boulenger (1903):
Petrocephalus ansorgii, sp. n. (Boulenger, 1903, illustrated Plate XXYIII. fig. 2.)
A single specimen from Agberi.
Depth of body 3 times in total length, length of head 4 and 1/3. Head slightly longer than deep; snout rounded, 1/6 length of head; mouth situated below the eye, its width 1/5 length of head; teeth bicuspid, 10 in the upper jaw, 20 in the lower; nostrils close together, close to the eye, a little above the level of its lower border; eye large, twice as long as the snout, 1 and 1/3 interorbital width. Dorsal 33, originating above 9th ray of anal, its length 1½ in its distance from head. Anal 39, equally distant from base of ventral and from base of caudal. Pectoral pointed, ¾ length of head, twice as long as ventral and extending beyond base of latter. Caudal with pointed lobes. Caudal peduncle 3 times as long as deep, 2/3 length of head. 45 scales in the lateral line, 11/13 in a transverse series on the body, 14/12 in a transverse series between dorsal and anal, 8 round caudal peduncle. Silvery, brownish on the back and on the anterior rays of the dorsal.
Holotype from Agberi, Lower Niger basin.
Distribution restricted to the Lower Niger basin.
From Boulenger (1903): Total length 105 millim.
Habitat and Ecology
Molecular Biology and Genetics
Barcode data: Petrocephalus ansorgii
Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.
See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
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Statistics of barcoding coverage: Petrocephalus ansorgii
Public Records: 3
Specimens with Barcodes: 3
Species With Barcodes: 1
IUCN Red List Assessment
Red List Category
Red List Criteria
- IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.