Scientific Name	Thunnus obesus   Pronounce			by: Guo-Shu Chen
Author	(Lowe, 1839)	Depth	0 - 250M
Chinese	大目鮪	Poisonous Fish	No
Family_Chinese	鯖科	Economic Fish	Yes
Family	F475　Scombridae	Edible Fish	Yes	Chinese In Mainland China	大眼金槍魚
Max Length	250 cm	Aquarium Fish	No	Common Name	大目仔、大眼鮪、大目串、短墩、串仔(澎湖)、短鮪
Distribution in World	global	Distribution in Taiwan	East、South、North、North East、ShaoLiuChew、LanI Is.、Greeb IS.、Nan Sa IS.
Habitats	Ocean、Deep Sea、Coastal	Holotype Locality	Off Madeira
Synonyms	Germo obesus, Germo sibi, Neothunnus obesus, Orcynus sibi, Parathunnus mebachi, Parathunnus obesus, Parathunnus obesus mebachi, Parathunnus sibi, Thunnus abesus, Thunnus atlanticus, Thunnus mebachi, Thunnus obesus mebachi, Thunnus obesus sibi ...all 17..
Reference	臺灣魚類誌(沈等, 1993)；The Live Marine Resources of the Western Central Pacific, Vol.6(FAO, 2001)  Sun, C.L. etc. 2001 Chi-Lu Sun, Chien-Lung Huang, etc. 2001
Specimen List	ASIZP0062702. FRIP20436. FRIP21569. NMNSF00850. NTUM05135.
Common Name	Tuna; Bigeye tunny; Big eye tunny; Big-eye tunny; Coffrey; Bigeye tuna fish; Big-eye tuna; Bigeye tuna; Bigeye; Big eye; Big eye tuna; Bigeyed tuna; Bigeye Tuna
Redlist Status	IUCN Redlist: Vulnerable(VU) A1bd 1996-08-01
Characteristic	Body fusiform, elongate, and slightly compressed. Teeth small and conical, in a single series. Gill rakers 27 to 34 on first arch. Two dorsal fins, separated only by a narrow interspace, some large specimens with very long second dorsal and anal fins, the first with XIV to XV spines; second dorsal fin with 13 to 15 rays followed by 8 to 9 finlets; anal fin with 13 to 15 rays followed by 8 to 9 finlets; pectoral fins moderately long in large individuals, but very long in smaller individuals; interpelvic process small and bifid. Body with very small scales; corselet of larger scales developed but not very distinct. Caudal peduncle very slender, bearing on each side a strong lateral keel between 2 smaller keels. Swimbladder present. Lower sides and belly whitish; a lateral iridescent blue band runs along the sides in live specimens. The first dorsal fin is deep yellow, the second dorsal and anal fins are light yellow, the finlets bright yellow edged with black.
habitats	Occur in areas where water temperatures range from 13°-29°C, but the optimum between 17° and 22°C. Variation in occurrence closely related to seasonal and climatic changes in surface temperature and thermocline. Juveniles and small adults school at the su
Distribution	Cosmopolitan in tropical and temperate waters of all oceans, but absent in the Mediterranean; a common species in Taiwan, especially in eastern and southern part.
Utility	Meat highly prized and processed into sashimi in Japan. Marketed mainly canned or frozen, but also sold fresh.