Scientific Name
Thunnus orientalis  
Thunnus orientalis太平洋黑鮪
by: Guo-Shu Chen
Author (Temminck & Schlegel, 1844) Depth - M
Chinese 太平洋黑鮪 Poisonous Fish No 
Family_Chinese 鯖科 Economic Fish Yes 
Family F475 Scombridae Edible Fish Yes  Chinese In Mainland China 東方金槍魚 
Max Length 300 cm  Aquarium Fish No  Common Name 黑鮪、黑甕串、黑暗串、東方鮪、東方藍鰭鮪、黑串、金槍魚、烏甕串、串魚、魚因、烏暗串 
Distribution in World North Pacific Ocean   Distribution in Taiwan East、South、North、North East、ShaoLiuChew、Greeb IS. 
Habitats Ocean、Coastal  Holotype Locality Japan 
Synonyms Orcynus schlegelii, Thunnus saliens, Thunnus schlegelii, Thunnus thynnus, Thunnus thynnus orientalis, Thynnus orientalis   
Reference 臺灣魚類誌(沈等, 1993);Fishbase(2002) 
Specimen List ASIZP0806194. ASIZP0806195. ASIZP0806196. ASIZP0916194. ASIZP0916195. ASIZP0916196. NMMBP06104. ZMUCP74123-*. ZMUCP74128-*.  
Barcode2014-10-30,Kwang-Tsao Shao,CO1,100% 2014-10-30,Kwang-Tsao Shao,CO1,100% 2014-10-30,Kwang-Tsao Shao,CO1,100%
Common Name Pacific bluefin tuna; Bluefin tuna 
Redlist Status NL Not in IUCN Redlist     
Characteristic Body fusiform, elongate, and slightly compressed. Teeth small and conical, in a single series. Gillrakers 27 to 34 on first gill arch. Two dorsal fins, separated only by a narrow interspace, second dorsal fin higher than first dorsal, the first with XIII to XV spines; second dorsal fin with 14 to 16 rays followed by 7 to 8 finlets; anal fin with 14 to 15 rays followed by 7 to 8 finlets; pectoral fins very short, less than 80% of head length; 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 silvery white with colourless transverse lines alternated with rows of colourless dots, visible only in fresh specimens; first dorsal fin yellow or bluish; the second reddish-brown; anal fin and finlets dusky yellow edged with black; median caudal keel black in adults.
habitats Epipelagic, usually oceanic, but seasonally coming close to shore. Tolerates ample temperature intervals. Forms schools by size, sometimes with other scombrids. Migrates between June and September in a northward direction along the coast of Baja Californi 
Distribution known found in the North Pacific from Gulf of Alaska to southern California and Baja California and from Sakhalin Island in the southern Sea of Okhotsk south to northern Philippines. It is mainly found in eastern and southern Taiwanese waters. 
Utility Marketed fresh and frozen. The belly portion fetches particularly high prices when containing much fat.