yubai, Luciogobius Ikeda [Y.], Tamada [K.] & Hirashima [K.] 2019:566, Figs. 1-3 [Zootaxa 4657 (no. 3); ref. 36910] Arafune, Kushimoto, Wakayama Prefecture, Japan. Holotype: NSMT-P 133344. Paratypes: BLIH, BSKU, FAKU, KPM, NSMT, OMNH, WMNH. •Valid as Luciogobius yubai Ikeda, Tamada & Hirashima 2019 -- (Koreeda et al. 2020:51 [ref. 38487], Parenti 2021:293 [ref. 38603], Saito & Namba 2022:27 [ref. 39433], Akaike et al. 2025:36 [ref. 42909]). Current status: Valid as Luciogobius yubai Ikeda, Tamada & Hirashima 2019. Oxudercidae: Gobionellinae. Distribution: Northwestern Pacific: Kochi, Wakayama, Nagasaki and Kagoshima Prefectures and southern Sea of Japan (southern Japan). IUCN (2025): Least Concern. Habitat: brackish, marine.