hattai, Lethenteron Iwata [A.], Sakai [H.] & Goto [A.] in Sakai, Iwata, Watanabe & Goto 2024:25, Figs. 6c-d, 7b, 8b, 9b, h, n, 10b, c, i, j, p [Ichthyological Research Online First; ref. 41696] Inami River, Koya River system, Shimonoseki, Yamaguchi Prefecture, Japan, 34°12'21.6"N, 131°04'56"E. Holotype: NSMT-P 147515. Paratypes: BIHM, HUMZ, KMNH, LBM, NSMT, THM. •Valid as Lethenteron hattai Iwata, Sakai & Goto 2024. Current status: Valid as Lethenteron hattai Iwata, Sakai & Goto 2024. Petromyzontidae. Distribution: East Asia: Akita to Nagasaki Prefectures, Honshu, Shikoku, and Kyushu Islands, Japan, and southern Korean Peninsula. Habitat: freshwater, brackish, marine.