Wrestling halfbeaks are surface-feeding fish and feed on a variety of small invertebrates including crustaceans and insect larvae, but especially mosquito larvae and flying insects that have fallen onto the surface of the water.
Dermogenys siamensis Fowler, 1934Demogenys siamensis Fowler, 1934; (misspelling) - Dermogenys sumatrana Weber & de Beaufort, 1922Hemiramphus sumatranus Bleeker, 1853; (valid as) - Dermogenys viviparaHemirhamphus viviparus Peters, 1865; (valid as) Dermogenys More