gracilis, Atherinichthys Günther [A.] 1861:405 [Catalogue of the fishes in the British Museum v. 3; ref. 1964] No locality. Holotype (unique): BMNH 2009.5.8.1. •In the synonymy of Menidia beryllina (Cope 1867) but not treated as valid [based on a juvenile with no locality] -- (Castro-Aguirre et al. 1999:196 [ref. 24550]). Current status: Synonym of Menidia beryllina (Cope 1867). Atherinopsidae: Menidiinae. Habitat: freshwater, brackish, marine.