Tetractenos Hardy [G. S.] 1983:8 Neut. Tetrodon hamiltoni Richardson 1846. Type by original designation. See Kottelat 2001:611 [ref. 25859] for complex nomenclatural issues. Current authors do not follow Kottelat; use of prevailing usage should be researched. •Objective synonym of Aphanacanthus Le Danois 1959 -- (Kottelat 2001:611 [ref. 25859]). •Valid as Tetractenos Hardy 1983 -- (see Su et al. 1986:112 [ref. 12582], Gomon et al. 1994:911 [ref. 22532], Matsuura 2001:3956 [ref. 26317], Hoese et al. 2006:1925 [ref. 29099], Matsuura 2008:855 [ref. 30661], Matsuura 2014:20 [ref. 33576]). Current status: Valid as Tetractenos Hardy 1983. Tetraodontidae.