Opostomias Günther [A.] 1887:208 Masc. Echiostoma micripnus Günther 1878. Type by monotypy. Misspelled Optostomias in Zoological Record for 1887. •Valid as Opostomias Günther 1887 -- (Morrow in Morrow & Gibbs 1964:353 [ref. 6962], Kawaguchi & Moser 1984:171 [ref. 13642], Fujii in Masuda et al. 1984:50 [ref. 6441], Fink 1985:11 [ref. 5171], Gibbs 1986:242 [ref. 5655], Paxton et al. 1989:201 [ref. 12442], Gomon et al. 1994:261 [ref. 22532], Harold 1999:1913 [ref. 24741], Paxton et al. 2006:449 [ref. 28995], Kenaley et al. 2008:251 [ref. 30630], Parin et al. 2014:149 [ref. 33547], Kenaley & Stewart 2015:518 [ref. 34248]). Current status: Valid as Opostomias Günther 1887. Stomiidae: Melanostomiinae.