• Usually occurs in schools. A group of over 60 individuals was observed in Hong Kong waters.
  • Mainly feeds on fishes, but also feeds on crustaceans and mollusks.
  • In 1970s, the species was recorded to be dispersed over Hong Kong’s southern waters throughout the year, moving to inner shore between the months of June and August.
  • A study in Taiwan showed that females first mature at 48 cm (Fork length).


  • Dorsally dark blue to greenish with wavy dark lines.
  • Ventrally silvery white.
  • There may be several dark spots on the body, above the pelvic fin.
  • Tail lunate.
  • Several finlets between the dorsal fin and caudal fin, and between the anal fin and caudal fin.

Common Name: Kawakawa

Family Common Name: Tunas

Scientific Name: Euthynnus affinis___(Cantor, 1849)

Maximum Length: 100 cm (Fork Length)