satoi, Lethenteron Sakai [H.], Iwata [A.] & Watanabe [K.] in Sakai, Iwata, Watanabe & Goto 2024:22, Figs. 6a-b, 7a, 8a, 9a, g, m, 10a, h, o [Ichthyological Research v. 72 (no. 3); ref. 41696] Tsukisamu River, a tributary of Toyohira River, Ishikari River system, Toyohira, Sapporo, Hokkaido, Japan, 42°58'35"N, 141°22'42"E. Holotype: NSMT-P 147514. Paratypes: BIHM, HUMZ, KMNH, LBM, THM. •Valid as Lethenteron satoi Sakai, Iwata & Watanabe 2024 -- (Watanabe et al. 2025:[3] [ref. 42578]). Current status: Valid as Lethenteron satoi Sakai, Iwata & Watanabe 2024. Petromyzontidae. Distribution: East Asia: Tsukisamu River drainage, Ishikari River basin, Hokkaido (Japan). Habitat: freshwater.