Abstract:Eighteen morphological traits of Fugu rubripes Temmincket Schlegel were studied. The phenotypic parameters of these traits and the coefficients of correlation among them were computed. The hierarchical principal component analysis and cluster analysis were employed to select the representative traits in the fish. The results of principal component analysis and cluster analysis were consistent， indicating that five body traits， including body weight, body girth 1, body length, length between eye and head, eye diameter should be considered for morphological selection. The results of the two methods will provide references for body traits selective breeding for F. rubripes.
