Scientific Name:     Thunnus obesus       
Nomenclater:     (Lowe, 1839)
Family:     F475  Scombridae
Holotype-Locality:     Off Madeira
Habitats:     Ocean、Deep Sea、Coastal     
Economic Fish:     Yes
Habitats Depth:     0 - 250 M     
Aquarium Fish:     No
Poisonous Fish:     No     
Edible Fish:     Yes
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, Thunnus sibi, Thunus obesus, Thynnus obesus, Thynnus sibi  
Reference:     Shen, S. C. , S. C. Lee, K. T. Shao, H. C. Mao, C. H. Chen, C. C. Chen, C. S. Tzeng. 1993. Fishes of Taiwan. Dept. Zool., Nat. Taiwan Univ., Taipei. xx + 960 pp., pls. 310. (in Chinese) Froese, R. and D. Pauly. Editors. 2004. FishBase. World Wide Web ele  Sun, C.L. etc. 2001 Chi-Lu Sun, Chien-Lung Huang, etc. 2001  文獻
Redlist Status:     IUCN Redlist: Vulnerable(VU)  
Common Name in Engulish:     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
Chinese Name transliteration:     duan wei, da yan jin ciang yu, da mu zai, da yan wei
Distribution in Taiwan:     East、South、North、North East、ShaoLiuChew、LanI Is.、Greeb IS.、Nan Sa IS.
Distribution in World:     global
Max Lenth:      250 cm
Specimen List:      ASIZP0062512. ASIZP0062702. ASIZP0900521. FRIP20436. FRIP21569. NMNSF00850. NTUM05135.  Download 7 records Download 7 records
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.
 

Text and images are provided by The Fish Datebase of Taiwan (Biodiversity Research Center, Academia Sinica, Taiwan)