Systematic position Phylum: Chordata Class: Actinopterygii (Ray-finned fishes) Order: Beloniformes (Needlefishes) Family: Adrianichthyidae (Adrianichthyids) Subfamily: Oryziinae (Medakas or ricefishes) Genus: Oryzias Species: O. melastigmus Synonyms Aplocheilus melastigmus McClelland, 1839 Haplochilus melastigma (McClelland, 1839) Panchax argenteus Day, 1868 Panchax cyanopthalma Blyth,