Abstract:2 hybrids of ♂ were comprehensively analyzed in six countable morphological parameters, 10 meristic parameters and 24 truss framework parameters. ANOVA showed that the countable parameters of the F1 and F2 hybrids were intermediate betweenexcept for the same number of spines in the anal fin. For the meristic and truss framework parameters, the F1 hybrid was larger than 3-5/total length, 5-7/total length, and O. niloticus in body width/total length, body height/total length, truss parameter /total length, and caudal peduncle height/total length. The F2 hybrid showed no significant difference with the F1 hybrid in 16 meristic and truss framework parameters; however, the F2 hybrid was larger than the F1 hybrid in head length/total length, truss parameter /total length, and hybrid in body length/total length, caudal peduncle length/total length, truss parameter /total length, and 2 hybrid stock was initially clustered with the F1 hybrid stock, then they were clustered with . Discriminant fomulations for the four stocks were developed with countable and measurable parameters, and the order of discriminant accuracy for these stocks was 2 hybrid. More F1 hybrid individuals were assigned to (92.9% in countable formula, 57.1% in measurable formula) than and hybrid individuals were assigned to F1 hybrids by the discriminant formula of hybrid (68.6% in countable formula, 77.2% in measurable formula). Principal component analysis showed that the scatter plots of the F1 and F2 hybrids were distributed between hybrid showed more overlapping with S. melanotheron. The above results showed that the hybrid inherited the morphological traits of their parents with some maternal inheritance. The F2 hybrid inherited some morphological parameters from the F1 hybrid, but also showed some distinct variations in other parameters.
