aiensis, Sicyopterus Keith [P.], Watson [R. E.] & Marquet [G.] 2004:112, Figs. 1-3 [Cybium v. 28 (no. 2); ref. 27828] Creek Ai, Efate Island, Vanuatu. Holotype: MNHN 2003-268. Paratypes: BLIH, MNHN, ROM, SMF. •Valid as Sicyopterus aiensis Keith, Watson & Marquet 2004 -- (Keith et al. 2012:304 [ref. 31972], Keith et al. 2015:80 [ref. 34328], Kottelat 2013:427 [ref. 32989], Parenti 2021:416 [ref. 38603]). Current status: Valid as Sicyopterus aiensis Keith, Watson & Marquet 2004. Oxudercidae: Sicydiinae. Distribution: Southwestern Pacific: Vanuatu endemic. Habitat: freshwater, brackish, marine.