Harengula thrissina (Jordan & Gilbert, 1882) .

Flatiron Herring. To 18.4 cm (7.3 in) TL (Miller and Lea 1972). La Jolla, southern California (Miller and Lea 1972) to Callao, Peru (Beltrán-León and Rios Herrera 2000), including Gulf of California (Whitehead and Rodríguez-Sánchez in Fischer et al. 1995). Inshore, marine and brackish waters (Fricke et al. 2020); depth: surface (nightlight; Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California), 1 m (3 ft) to at least 7 m (23 ft) (min.: González-Acosta et al. 1999; max.: Godínez-Domínguez et al. 2000).