Polynemus


Polynemus is a genus of threadfins. They are native to South and Southeast Asia and, depending on the species, occur in freshwater, brackish, and/or marine environments.
The family Polynemidae 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. 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 Motomura, 2003 Polynemus bidentatus Motomura & Tsukawaki, 2006Polynemus dubius Bleeker, 1854 Polynemus hornadayi Myers, 1936 Polynemus kapuasensis Motomura & van Oijen, 2003 Polynemus melanochir Valenciennes, 1831