Eugerres lineatus (Humboldt in Humboldt & Valenciennes, 1821)
Body high, rhomboidal (height ~ 50% of SL), compressed; upper head profile steep, ~ straight; lower profile of head distinctively concave; mouth highly extensible, pointing downward when protruded; 11-12 lower gill rakers; lower border of preopercle serrated; bone under front of eye with serrated border; teeth inside throat all pointed; dorsal fin IX, 10, elevated at front, 2nd spine longer than distance between tip of snout and rear of eye; anal fin III, 8, 2nd anal spine thick, long, a little longer than 2nd dorsal spine; pectoral length ~ equal head length, reaches to tips of pelvics but not to anus; tail forked; scales large, conspicuous and finely rough, covering most of head and body; dorsal and anal fins fold into a high scaly sheath along their bases.
Body silver, darker on back; thin dark lines along scale rows very evident on upper 1/2 of body; fins dark, spiny dorsal with thin black margin; inside pectoral base dark.
Size: 26 cm.
Habitat: in shallow coastal areas and lagoons.
Depth: 0-30 m?
Southern Baja and the lower Gulf of California to Ecuador and the Galapagos.