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''Polynemus'' is a genus of threadfins (family Polynemidae).〔〔〔 They are native to South and Southeast Asia and, depending on the species, occur in freshwater, brackish, and/or marine environments.〔 The Polynemidae family is characterized by the pectoral fin that is divided into two sections; the upper one with rays that are attached whereas the lower rays are long and unattached ("threads"). In ''Polynemus'' the unattached rays number 14–15, in contrast to 3–7 in other genera. ==Species== There are eight recognized species in this genus: * ''Polynemus aquilonaris'' — Northern paradise fish * ''Polynemus bidentatus'' * ''Polynemus dubius'' — Eastern paradise fish * ''Polynemus hornadayi'' — Hornaday’s paradise fish * ''Polynemus kapuasensis'' — Kapuas elegant paradise fish * ''Polynemus melanochir'' * * ''Polynemus melanochir melanochir'' — Blackhand paradise fish * * ''Polynemus melanochir dulcis'' — Lake blackhand paradise fish * ''Polynemus multifilis'' — Elegant paradise fish * ''Polynemus paradiseus'' — Paradise threadfin 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Polynemus」の詳細全文を読む スポンサード リンク
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