extraneus, Sicyopterus Herre [A. W. C. T.] 1927:311, Fig. 4 [Monographs, Bureau of Science Manila Monogr. 23; ref. 2104] Cabalian, Leyte Island, Philippines. Syntypes: BSMP 10588 and 26884-87 (5) destroyed, seen by Koumans. Additional material: (3) BSMP (1) presumed destroyed. Type catalog: Koumans 1940:193 [ref. 2676]. •Valid as Sicyopterus extraneus Herre 1927 -- (authors). •Synonym of Sicyopterus macrostetholepis (Bleeker 1853) -- (Kottelat 2013:428 [ref. 32989]). •Synonym of Sicyopterus lagocephalus (Pallas 1770) -- (Watson et al. 2000:13 [ref. 25138], Keith et al. 2015:102 [ref. 34328]). Current status: Synonym of Sicyopterus lagocephalus (Pallas 1770). Gobiidae: Sicydiinae. Habitat: freshwater, brackish, marine.