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. 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).
Ogowe River in Gabon.
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. Froese, R. and D. Pauly.
Editors. 2011. FishBase. World Wide Web electronic
publication. www.fishbase.org, version.