gracile, Gonostoma Günther [A.] 1878:187 [20] [Annals and Magazine of Natural History (Series 5) v. 2 (nos 7/8/9)(art. 2/22/28); ref. 2010] South of Japan, Challenger station 232, 345 fathoms depth, and Challenger station 230, depth 2425 fathoms. Syntypes: BMNH 1887.12.7.162 (1), 1887.12.7.163 (1). On p. 20 of separate. See also Günther 1887:174, Pl. 45 (fig. C) [ref. 2013]. •Valid as Gonostoma gracile Günther 1878 -- (Yamamoto in Okamura et al. 1982:73, 324 [ref. 8256], Fujii in Masuda et al. 1984:45 [ref. 6441], Machida in Okamura & Kitajima 1984:145, 334 [ref. 8057], Peden et al. 1985:4 [ref. 24081] as gracilis, Matarese et al. 1989:90 [ref. 26885], McAllister 1990:88 [ref. 14674], Shinohara et al. 1994:57 [ref. 22800], Shinohara et al. 1996:161 [ref. 26605], Harold 1999:1899 [ref. 24741], Randall & Lim in Randall & Lim 2000:590 [ref. 25122], Shinohara et al. 2001:296 [ref. 25995]). •Valid as Sigmops gracile (Günther 1878) -- (Miya & Nishida 2000:385 [ref. 24454], Nakabo 2000:308 [ref. 25086], Nakabo 2002:308 [ref. 26001], Shinohara et al. 2005:404 [ref. 28370], Mundy 2005:166 [ref. 28379]). •Valid as Sigmops gracilis (Günther 1878) -- (Sheiko & Fedorov 2000:21 [ref. 25650], Mecklenburg et al. 2002:213 [ref. 25968], Ozawa & Katayama 2003:197 [ref. 26921], Fedorov et al. 2003:43 [ref. 27579], Love et al. 2005:36 [ref. 37547], Lee & Kim 2013:46 [ref. 36296], Maslenikov et al. 2013:6 [ref. 37947], Parin et al. 2014:144 [ref. 33547], Love et al. 2021:56 [ref. 39279], Page et al. 2023:85 [ref. 40505]). Current status: Valid as Sigmops gracilis (Günther 1878). Gonostomatidae. Distribution: North Pacific: Taiwan, Korea and Japan east to Hancock Seamount (Hawaiian Ridge), north to Aleutian Islands and Gulf of Alaska (U.S.A.), south to northern California (U.S.A.). Habitat: marine.