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| Common names: grunt (English), corocoro (Espanol), ronco (Espanol), vieja (Espanol), roncacho (Espanol) |
Pomadasys macracanthus (Günther, 1864)
Body oblong, strongly compressed; forehead profile ~ oblique; mouth not reaching under front of eye, inside not red, lips thin; chin with 2 pores at front and 2 inside hole behind, plus a longitudinal groove; preopercle serrated in juveniles, almost smooth in adults; dorsal fin XII (rarely XI), 13, moderately notched; anal III, 7-8, second anal spine long and stout, thicker than 3rd; pectoral fins very long, reaching to level of anus; 1 row of scales on membrane between soft dorsal and anal rays; 41-46 pored lateral line scales; 3.5-4.5 oblique rows of scales between lateral line and origin of dorsal fin.
Silvery with 4-5 indistinct dark bars on side (sometimes absent in adults); a dark spot on the upper operculum.
Maximum size, 35 cm.
Habitat: coastal seas on sandy or muddy bottoms, entering brackish estuaries and river mouths.
Depth: 0-20 m.
Southern Baja and the Gulf of California to Ecuador.