Five interspecific and 18 intergeneric sunfish crosses were attempted by artificial stripping and fertilization techniques. Hatching success appeared to be related to phylogenetic relationship. In interspecific crosses, hatching success was 64–122% as high as in the parental control cross. In intergeneric crosses it varied from less than 1 to 104% as high as the parental cross, but in only 5 of the 18 intergeneric crosses was hatching success more than 60% as great as in the control cross.