Neostethus est genus piscium familiae Phallostethidarum, in habitationibus aquae dulcis et amarae in Asia Meridiorientali endemicorum. Maior specierum parte solum in Philippinis invenitur.
Undecim species agnitae in genus digeruntur[1]:
- Neostethus amaricola (Villadolid & Manacop, 1934)
- Neostethus bicornis Regan, 1916
- Neostethus borneensis Herre, 1939
- Neostethus ctenophorus (Aurich, 1937)
- Neostethus djajaorum Parenti & Louie, 1998
- Neostethus lankesteri Regan, 1916
- Neostethus palawanensis (G. S. Myers, 1935)
- Neostethus robertsi Parenti, 1989
- Neostethus thessa (Aurich, 1937)
- Neostethus villadolidi Herre, 1942
- Neostethus zamboangae Herre, 1942