Diagnostic Description
provided by Fishbase
Petrocephalus haullevillii is distinguished from P. congicus by the absence of a rosette of electroreceptor organs above the eye (Ref. 91771). Teeth bicuspid, 11-14 in upper jaw and 16-18 in lower jaw (Ref. 41597).
Morphology
provided by Fishbase
Dorsal spines (total): 0; Dorsal soft rays (total): 18 - 21; Analspines: 0; Analsoft rays: 26 - 28
