mordax, Petromyzon Richardson [J.] 1846:62, Pl. 38 (figs. 3-6) [Ichthyology of the voyage of H. M. S. Erebus & Terror v. 2 (2); ref. 3740] Tasmania, Australia. Holotype (unique): BMNH 1855.10.3.84. •Valid as Mordacia mordax (Richardson 1846) -- (Cadwallader & Backhouse 1983:48 [ref. 25473], Paxton et al. 1989:24 [ref. 12442], Gomon et al. 1994:83 [ref. 22532], Potter in McDowall 1996:33 [ref. 22909], Chilcott & Humphries 1996:145 [ref. 25528], Yamazaki & Goto 2000:8 [ref. 24514], Allen et al. 2002:52 [ref. 25930], Hammer & Walker 2004:88 [ref. 28129], Paxton et al. 2006:44 [ref. 28994], Gomon 2008:28 [ref. 30616], Lang et al. 2009:44 [ref. 31599], Renaud 2011:21 [ref. 31770], Hammer et al. 2012:63 [ref. 32389], Kuiter 2018:8 [ref. 36369], Miller et al. 2021:[10] [ref. 38264]). Current status: Valid as Mordacia mordax (Richardson 1846). Mordaciidae. Distribution: Southeastern and southern Australia: Queensland to Victoria, South Australia and Tasmania. Habitat: freshwater, brackish, marine.