gracillimus, Gobionellus Ginsburg [I.] 1953:24 [Journal of the Washington Academy of Sciences v. 43 (no. 1); ref. 1806] Apalachicola Bay, Florida, U.S.A. Holotype: USNM 123227. Paratypes: (13) USNM 53340 (1), 62702 (1), 123224-26 (1, 1, 1), 123228 (2). •Synonym of Gobionellus hastatus Girard 1859 -- (Castro-Aguirre et al. 1999:443 [ref. 24550]). •Synonym of Gobionellus oceanicus (Pallas 1770) -- (Pezold & Grady 1989:662 [ref. 13579], Pezold 2004:293 [ref. 27686]). Current status: Synonym of Gobionellus oceanicus (Pallas 1770). Gobiidae: Gobionellinae. Habitat: freshwater, brackish, marine.