Inheritance studies of blue and golden varieties of tench (Pisces : Tinca tinca L.)

The inheritance of blue and golden colors in tench (Tinca tinca L.) was stu died by mating the respective mutations to the normal or wild-type green ph enotype and/or together. Analyses of phenotype, frequencies in F-1, F-2, an d BC generations revealed that both color variants are mutations of two dif ferent, non-linked genes (b and g, respectively) recessive to wild pigmenta tion (B-G-), and both Variants represent the homozygous combination Only (b bG-, B-gg). The crossing of heterozygous carriers of both described genes p rovided wild, blue, and golden variants as well as alampic individuals comp letely all types of skin pigments. Negative effect of mutations responsible for both color phenotypes on growth intensity was also documented.