Abstract
Karyotype studies were undertaken in the Japanese colored-carps, the 'Ogon' (Golden carp), the 'Kohaku' (Red and white carp) and the 'Sanshoku' (Tripple color carp) by way of comparison with the chromosomes of the wild black-carp. The basic karyotype of the colored-carp consisted basically of 6 pairs of metacentrics; 17 paired and an unpaired submetacentrics; 25 paired and an unpaired subtelocentrics and one L.C., being 2n, 99 in total. But, it is usual that the diploid number of chromosomes of the colored-carp appeared as 2n, 100 containing an L.C. and a single micro-chromosome.
