Northern Medaka

Oryzias sakaizumii is distinguished from all other congeners including O. latipes that are distributed throughout east Asia by the following combination of characters: distribution of melanophores, dense network of melanophores along each scale margin on the body surface in both sexes; depth of notch in membrane between dorsal-fin rays 5 and 6 less than half the length of rays in males; distinctive irregular black spots on the posterior portion of body lateral; and several silvery scales in patches on the posterior portion of the body (Ref. 89067).

Occurs in ponds, marshes, and streams, such as irrigation canals amid paddy fields in flat alluvial lowlands. Well adapted to aquatic life on temporary floodplain wetlands (Ref. 89067).

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Oryzias sakaizumii Oryzias generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Adrianichthyidae familian.

Oryzias sakaizumii est une espèce de poissons de la famille des Adrianichthyidae. Il appartient au genre Oryzias, le seul genre de la sous-famille Oryziinae.