helvolus, Monopterus Richardson [J.] 1846:316 [Report of the British Association for the Advancement of Science 15th meeting [1845]; ref. 3742] Canton, China. No types known. Appeared as Monopterus? helvolus. Based solely on illustration by Reeves (see Whitehead 1970:211, Pl. 20d [ref. 11606]). •Synonym of Monopterus albus (Zuiew 1793) -- (Rosen & Greenwood 1976:57 [ref. 7094]). •Synonym of Monopterus javanensis Lacepède 1800 -- (Kottelat 2013:308 [ref. 32989]). Current status: Synonym of Monopterus javanensis Lacepède 1800. Synbranchidae. Habitat: freshwater, brackish.