There are currently 21 species in the genus:5
"FAO Fisheries & Aquaculture - Aquatic species". http://www.fao.org/fishery/species/2266/en ↩
Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Polydactylus". FishBase. May 2017 version. /wiki/Rainer_Froese ↩