modestus, Monacanthus Günther [A.] 1877:446 [Annals and Magazine of Natural History (Series 4) v. 20 (no. 119) (art. 56); ref. 2009] Inland Sea, Japan. Holotype (unique): BMNH 1879.5.14.383. Also described as new as Monocanthus modestus in Günther 1880:73 [ref. 2011]. •Valid as Navodon modestus (Günther 1877) -- (Wang et al. 2001:332 [ref. 26566]). •Valid as Thamnaconus modestus (Günther 1877) -- (Matsuura in Masuda et al. 1984:360 [ref. 6441], Matsuura in Okamura et al. 1985:629, 744 [ref. 8056], Mohsin & Ambak 1996:617 [ref. 27969], Sokolovskaya et al. 1998:14 [ref. 24670], Nakabo 2000:1407 [ref. 25182], Shinohara et al. 2000:184 [ref. 25987], Kolpakov & Barabanshchikov 2001:423 [ref. 25413], Shimizu 2001:46 [ref. 25799], Nakabo 2002:1407 [ref. 26193], Choi et al. 2003:448, 694 [ref. 26218], Parin 2003:S33 [ref. 28536], Shinohara et al. 2005:444 [ref. 28370], Motomura et al. 2010:236 [ref. 31256], Matsuura 2014:13 [ref. 33576], Parin et al. 2014:551 [ref. 33547], Dyldin & Orlov 2017:201 [ref. 35257], Kim et al. 2020:199 [ref. 39118], Sonoyama et al. 2020:129 [ref. 37637], Dyldin et al. 2021:46 [ref. 38804]). Current status: Valid as Thamnaconus modestus (Günther 1877). Monacanthidae. Distribution: Northwestern Pacific: China to Korea and Japan. Habitat: brackish, marine.