The results clearly show that there are two kinds of Hibuna, diploidy and triploidy, in the Harutori Lake. The diploid Hibuna, 2n=100, show the same chromosome constitution and C-band pattern as the gold-fish. The individuals with triploid chromosomes, 2n=154, are the same as those of the Ginbuna (C. a. langsdorfii) in the chromosome constitutions and C-band patterns.
