aestivaregia, Rhinogobius Mori [T.] 1934:56, Pl. 21 (figs. 3a-3b) [Report of the first scientific expedition to Manchoukuo, Tokyo, Sec. 5, Zoology Pt 1; ref. 3042] Summer Palace, Jehol, Manchouko, China. Holotype: whereabouts unknown. Additional material or paratypes: (4). •Valid as Ctenogobius aestivaregia (Mori 1934) -- (Zhu 1995:183 [ref. 25213]). •Synonym of Rhinogobius similis Gill 1859 -- (Okada 1961:659 [ref. 6363] as aestivarengia). •Synonym of Rhinogobius fukushimai Mori 1934 -- (Suzuki et al. 2017:81 [ref. 35202], Pezold 2022:68 [ref. 39351]). Current status: Synonym of Rhinogobius fukushimai Mori 1934. Gobiidae: Gobionellinae. Habitat: freshwater.