The morphological variations of the reciprocal F₁ hybrids between Pelteobagrus vachelli and Pseudobagrus ussuriensis were analyzed by Chi-square analysis and multivariate data analysis methods based on the parameters of morphometric characters.The results of Chi-square analysis indicated that there were no significant differences between the reciprocal F₁ hybrids and their parents, except for the number of pectoral fin.The number of pectoral fin can be used as an important parameter to discriminate the reciprocal F₁ hybrids from their parents.In aspect of the characters of anal fin and caudal fin, there were significant differences between the reciprocal F₁ hybrids and their parents of P.vachelli, but not significant between reciprocal F₁ hybrids and their parents of P.ussuriensis.The results of cluster analysis have revealed that the morphometric characters of two female parent fish groups were much closer to the two male parent fish groups, as well to the reciprocal F₁ hybrids groups.Principal component analysis showed that the morphological differences of six experimental fish groups were induced by length discrepancy of fish body depth.Discriminant analysis indicated that the total discriminant accuracy of the discriminant functions was 97.9% in the six experimental fish groups.All results showed that the reciprocal F₁ hybrids appeared morphological diversity to some extent compared with their parents, and the reciprocal F₁ hybrids were much closer to P.ussuriensis in the aspect of morphology.