Euthynnus affinis (Cantor, 1849)
Catalog of Fishes (gen., sp.) | ITIS | CoL
Actinopterygii | Perciformes | Scombridae | Scombrinae
Thynnus affinis, Euthunnus affinis affinis, Euthunnus alleteratus affinis,
Thonine orientale, Bacoreta oriental, Dwarf bonito,
Picture by Field, R.
Collette, B.B. and C.E. Nauen. 1983. (Ref. 168)
Other references | Biblio | Coordinator : Collette, Bruce B. | Collaborators
Size / Weight / Age
Max length : 100.0 cm FL male/unsexed; (Ref. 168); common length : 60.0
cm FL male/unsexed; (Ref. 168); max. published weight: 14.0 kg (Ref. 30874)
Length at first maturity
Lm ?, range 40 - 65 cm
Pelagic-neritic; oceanodromous (Ref. 51243); marine; depth range 0 - 200
m (Ref. 54439)
Climate / Range
Tropical; 18°C - 29°C (Ref. 168); 35°N - 25°S, 40°E
- 137°W (Ref. 54439)
Indo-West Pacific: in warm waters including oceanic islands and archipelagos.
A few stray specimens have been collected in the Eastern Central Pacific.
Highly migratory species, Annex I of the 1982 Convention on the Law of
the Sea (Ref. 26139).
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Dorsal spines (total): 1114; Anal spines: 0; Anal soft rays: 13 - 14; Vertebrae:
39. Swim bladder absent. No trace of vertebral protuberances. Anterior
spines of first dorsal fin much higher than those mid-way. Interpelvic
process small and bifid. Body naked except for corselet and lateral line.
Posterior portion of the back with a pattern of broken oblique stripes.
Glossary (e.g. epibenthic)
Occurs in open waters but always remains close to the shoreline. The young
may enter bays and harbors. Forms multi-species schools by size with other
scombrid species comprising from 100 to over 5,000 individuals. A highly opportunistic
predator feeding indiscriminately on small fishes, especially on clupeoids
and atherinids; also on squids, crustaceans and zooplankton (Ref. 9684). Generally
marketed canned and frozen; also utilized dried, salted, smoked (Ref. 9684)
and fresh (Ref. 9987).