marquesensis, Sicyopterus Fowler [H. W.] 1932:7, Fig. 3 [Occasional Papers of the Bernice Pauahi Bishop Museum of Polynesian Ethnology and Natural History v. 9 (no. 25); ref. 1413] Tohetaivau, Omoa [Oomoa] Valley, Fatuhiva, Marquesas Islands, elevation 1700 feet. Holotype: BPBM 3493. Paratypes: (should be 12) ANSP 54168-73 (6); BPBM 5300 (2), 10076 (4); USNM 109370 (2). Type catalog: Koumans 1940:157 [ref. 2676]. •Valid as Sicyopterus marquesensis Fowler 1932 -- (Maugé et al. 1992:219 [ref. 19910], Marquet et al. 1999:43 [ref. 23934], Watson et al. 2000:24 [ref. 25138], Larson & Murdy 2001:3603 [ref. 26293], Keith et al. 2002:128 [ref. 31473], Keith et al. 2010:327 [ref. 30747], Keith et al. 2015:114 [ref. 34328], Parenti 2021:420 [ref. 38603]). Current status: Valid as Sicyopterus marquesensis Fowler 1932. Oxudercidae: Sicydiinae. Distribution: South Pacific: Marquesas Islands (French Polynesia) endemic. Habitat: freshwater, brackish, marine.