tandanus, Plotosus Mitchell [T. L.] 1838:opp. 44, 95, Pl. 5 (fig. 2) [Three expeditions into the interior of eastern Australia v. 1; ref. 3029] Lagoon near Tangulda, Namoi River, New South Wales; river between Gwydir River and MacIntyre River, New South Wales, Australia. No types known. Syntypes: whereabouts unknown. Type catalog: Ferraris 2007:352 [ref. 29155]. South Atlantic. •Valid as Tandanus tandanus (Mitchell 1838) -- (Cadwallader & Backhouse 1983:84 [ref. 25473], Paxton et al. 1989:226 [ref. 12442], Musyl & Keenan 1996:526 [ref. 22293], Pollard et al. in McDowall 1996:109 [ref. 22909], Pusey et al. 2000:72 [ref. 24466], Unmack 2001:1061 [ref. 25797], Allen et al. 2002:88 [ref. 25930], Hammer & Walker 2004:88 [ref. 28129], Hoese & Gates 2006:365 [ref. 28997], Ferraris 2007:352 [ref. 29155], Hammer et al. 2012:63 [ref. 32389], Welsh et al. 2014:136 [ref. 33336], Welsh et al. 2017:235 [ref. 35347], Kuiter 2018:14 [ref. 36369]). Current status: Valid as Tandanus tandanus (Mitchell 1838). Plotosidae. Distribution: Australia: Queensland, New South Wales and northern Victoria. Habitat: freshwater.