Habitat:This species is known from two sites within
the Ogôoué River basin of Gabon. The
type locality is the Rapids of Massoukou (Masuku)
on the Ogôoué River near Franceville
and a second population has been collected in rapids
on the Louétsi River near Bongolo. Given the
significant river distance between these sites (>
500 km), we speculate that S. acanthoperca
is widely distributed in the upper Ogôoué
basin wherever similar rapid habitats exist (Friel
& Vigliotta, 2006). Description:
Dorsal spines (total): 2; Dorsal soft rays (total):
7; Anal spines: 3; Anal soft rays: 8; Vertebrae: 35.
Diagnosis: Synodontis acanthoperca is a relatively
small species, with a maximum standard length below
50 mm. It is distinguished from all congeners by a
distinctive pattern that includes a pair of dark patches
on the caudal fin; one patch is present in the middle
of each lobe of the caudal fin. Further distinguished
by the presence of a well-developed opercular spine
in sexually mature males.
Ogowe River in Gabon.
Froese, R. and D. Pauly.
Editors. 2011. FishBase. World Wide Web electronic
publication. www.fishbase.org, version. Friel, J.P. and T.R. Vigliotta, 2006.
Synodontis acanthoperca, a new species from the Ogôoué
River system, Gabon with comments on spiny ornamentation
and sexual dimorphism in mochokid catfishes (Siluriformes:
Mochokidae). Zootaxa 1125:45-56.