** Hypomesus nipponensis McAllister, 1963 .

Wakasagi. To 19.5 cm (7.8 in) SL (Saruwatari et al. 1997). Widespread in Japan, Sakhalin Island and environs (Dyldin and Orlov 2016b); introduced to California lakes in 1959 (Saruwatari et al. 1997), now in Sacramento–San Joaquin Estuary (Aasen et al. 1998). Primarily a brackish-water species; found also in fresh water, commonly from transplants (Saruwatari et al. 1997); depth: shallow waters to 50 m (164 ft) (Kim and Kim 2019).