Common names: kawakawa (English), bacoreta (Espanol)
Euthynnus affinis (Cantor, 1849)
Elongate, fusiform; no fatty eyelid; jaw teeth slender, conical; top of tongue with 2 cartilaginous crests; 29-33 gill rakers; 1st dorsal XII-XVI; 2 dorsal fins barely separated; front of 1st dorsal is high; ~ 9 dorsal finlets and ~ 7 anal finlets; bone between base of pelvics short, forked; pectorals 25-29 rays; two small keels separated by one large one on tail base; corselet of large, thickened scales on front body, body scaleless behind corselet.
Bluey above, silvery below; a cluster of black spots on belly above pelvic fin; ~ 12 oblique dark lines on upper back behind corselet.
Size: 110 cm; at least 13.2 kg.
Habitat: surface pelagic, coastal.
Depth: 0-50 m.
Indo-Pacific; vagrants in the Revillagigedos and southern Baja.