Toshinobu Asai, Hiroshi Senou and Kazumi Hosoya (2011) Oryzias sakaizumii, a new ricefish from northern Japan (Teleostei: Adrianichthyidae). Ichthyol. Explor. Freshwaters, Vol. 22, No. 4, pp. 289-299.(pdf) メダカの北日本集団がOryzias sakai…