The medaka, or killifish, a freshwater fish common to Japan, Korea, and China. It is easily maintained in the laboratory and was the first fish in which Mendel's laws were shown to be valid. Y-linked inheritance was first demonstrated in the medaka and the guppy. N = 24; C = 720 mbp. See Classification, Chordata, Osteichythes, Neopterygii, Cypriniformes.
Subjects: Genetics and Genomics.