Asai, Senou & Hosoya, 2011
Oryzias sakaizumii, a new ricefish from northern Japan (Teleostei: Adrianichthyidae)Oryzias sakaizumii, new species, is described from Japanese freshwaters along the northern coast of the Sea of Japan. It is distinguished from its Japanese congener, O. latipes, by a slightly notched membrane between dorsalfin rays 5 and 6 in males (greatly notched in O. latipes); dense network of melanophores on the body surface (diffuse melanophores in O. latipes); distinctive irregular black spots on posterior portion of body lateral (absent in O. latipes); and several silvery scales arranged in patches on the posterior portion of the body (few in O. latipes).
Toshinobu Asai, Hiroshi Senou and Kazumi Hosoya
Ichthyological Exploration of Freshwaters, 22 (4): 289-299, 2011.