nystromi, Leptocephalus Jordan [D. S.] & Snyder [J. O.] 1901:853, Fig. 5 [Proceedings of the United States National Museum v. 23 (no. 1239); ref. 2508] Nagasaki, Japan. Holotype: CAS-SU 6469. Additional material or paratypes: ANSP 26215-16 (2), BMNH 1903.5.14.140 (1), CAS-SU 6969 (1). Type catalog: Böhlke 1953:48 [ref. 12291], Böhlke 1984:65 [ref. 13621]. •Valid as Gnathophis nystromi (Jordan & Snyder 1901) -- (Asano in Masuda et al. 1984:28 [ref. 6441], Mohsin & Ambak 1996:170 [ref. 27969], Smith in Randall & Lim 2000:586 [ref. 25122], Choi et al. 2003:146, 494 [ref. 26218], Zhang et al. 2010:206 [ref. 31511]). •Possibly a synonym of Gnathophis heterognathos (Bleeker 1858) -- (Smith 1989:521 [ref. 13285]). •Valid as Gnathophis nystromi (Jordan & Snyder 1901), subspecies nystromi -- (Lee & Joo 1999:27 [ref. 25724], Nakabo 2000:230 [ref. 25086], Shinohara et al. 2001:294 [ref. 25995], Nakabo 2002:230 [ref. 26001], Mundy 2005:141 [ref. 28379], Shinohara et al. 2011:39 [ref. 31715], Shinohara et al. 2014:237 [ref. 33330]). •Synonym of Gnathophis heterognathos (Bleeker 1858) -- (Karmovskaya 2004:S15 [ref. 28053], Ho et al. 2015:147 [ref. 34130]). Current status: Synonym of Gnathophis heterognathos (Bleeker 1858). Congridae: Congrinae. Distribution: Western North Pacific and central Pacific (Hawaii Ridge) [if valid]. Habitat: marine.