nipponicus, Gasterosteus Higuchi [M.], Sakai [H.] & Goto [A.] 2014:346, Figs. 1, 2a, 4 [Ichthyological Research v. 61 (no. 4); ref. 33316] Usujiri, Minami-kayabe, Hokkaido, Sea of Japan. Holotype: HUMZ 97486. Paratypes: Many at HUMZ, LBM, NSMT-P. Plus non-type specimens. •Valid as Gasterosteus nipponicus Higuchi, Sakai & Goto 2014 -- (Tohkairin et al. 2015:6 [ref. 35331], Dyldin & Orlov 2017:57 [ref. 35138], Dyldin et al. 2020:85, 110 [ref. 37569], Sonoyama et al. 2020:35 [ref. 37637], Dyldin et al. 2021:58 [ref. 38804], Dyldin & Orlov 2022:35 [ref. 38972]). Current status: Valid as Gasterosteus nipponicus Higuchi, Sakai & Goto 2014. Gasterosteidae. Distribution: Northwestern Pacific: Sea of Japan, Sea of Okhotsk, south to Korea and Sakhalin Island (Russia). Habitat: freshwater, brackish, marine.