Ctenogobius sagittula (Günther, 1861) .

Lancetail Goby or Longtail Goby. To about 30 cm (12 in) TL (Camm Swift, pers. comm. to M.L.). Marina del Rey, southern California (Lea and Rosenblatt 2000) to Puerto Pizarro, Peru (Chirichigno and Vélez 1998) . Benthic; depth: intertidal to 5 m (17 ft) (min.: Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California; max.: Robertson and Allen 2002). Primarily marine but does enter freshwater (Argulo et al. 2020). Also, recently as Gobionellus sagittula (Günther, 1862) and Gobionellus longicaudus (Jenkins & Evermann, 1889) .