chaimi, Silhouettea Goren [M.] 1978:197, Fig. 4 [Senckenbergiana Biologica v. 59 (nos 3/4); ref. 1851] Nabek, Sinai, Egypt, Gulf of Aqaba, Red Sea. Holotype: HUJ 10064 [ex HUJ 7579b]. Paratypes: HUJ 11222 [ex 7579c] (orig. 3, now 2), 7581 (1); SMF 13821 (1), 13837 (1). Type catalog: Golani 2006:35 [ref. 28840]. •Valid as Acentrogobius chaimi Goren 1978 -- (Miller 1988:269 [ref. 26483]). •Valid as Silhouettea chaimi Goren 1978 -- (Goren 1979:53 [ref. 1852], Dor 1984:250 [ref. 29757], Goren & Dor 1994:66 [ref. 25356]). •Synonym of Papillogobius melanobranchus (Fowler 1934) -- (Kovačić & Bogorodsky 2013:370 [ref. 32441]). •Synonym of Favonigobius melanobranchus (Fowler 1934) -- (Parenti 2021:155 [ref. 38603], Larson 2022:86 [ref. 39971]). Current status: Synonym of Favonigobius melanobranchus (Fowler 1934). Gobiidae: Gobiinae. Habitat: marine.