Scientific Name	Thunnus tonggol   Pronounce			by: Lab of Fish Ecol. and Evo., BRCAS
Author	(Bleeker, 1851)	Depth	0 - 10M
Chinese	長腰鮪	Poisonous Fish	No
Family_Chinese	鯖科	Economic Fish	Yes
Family	F475　Scombridae	Edible Fish	Yes	Chinese In Mainland China	青幹金槍魚
Max Length	145 cm	Aquarium Fish	No	Common Name	黑鰭串、串仔、長實、長翼、小黃鰭鮪
Distribution in World	India Ocean to West Pacific Ocean	Distribution in Taiwan	East、South、North、North East、ShaoLiuChew、LanI Is.、Nan Sa IS.
Habitats	Coastal	Holotype Locality	Batavia, Java
Synonyms	Kishinoella rara, Kishinoella tonggol, Neothunnus rarus, Neothunnus tonggol, Thunnus nicolsoni, Thunnus rarus, Thynnus tonggol
Reference	臺灣魚類誌(沈等, 1993)；The Live Marine Resources of the Western Central Pacific, Vol.6(FAO, 2001)
Specimen List	ASIZP0056597. ASIZP0061304. ASIZP0078657. ASIZP0078776. ASIZP0078777. ASIZP0078778. ASIZP0078780. ASIZP0078784. ASIZP0078785. FRIP20252. FRIP21445. FRIP21484. NMMBP02261. NMNSF00938. NTUM08221. ZMUCP74138-*.
Common Name	Oriental bonito; Northern bluefin; Northern bluefin tuna; Blue-fin tuna; Blue fin tuna; Indian long-tailed tuna; Longtail tuna
Redlist Status	Not in IUCN Redlist
Characteristic	Body fusiform, elongate, and slightly compressed. Teeth small and conical, in a single series. Gill rakers 27 to 34 on first gill arch. Two dorsal fins, separated only by a narrow interspace, second dorsal fin higher than the first dorsal fin, the first with XII to XIV spines; second dorsal fin with 14 to 15 rays followed by 8 to 9 finlets; anal fin with 13 to 14 rays followed by 8 to 9 finlets; pectoral fins short to moderately long; 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 absent or rudimentary. Lower sides and belly silvery white with colorless elongate oval spots arranged in horizontally oriented rows. The dorsal, pectoral and pelvic fins blackish; the tip of the second dorsal and anal fins washed with yellow; the anal fin silvery; the dorsal and anal finlets yellow with grayish margins; the caudal fin blackish, with streaks of yellow green.
habitats	Predominantly neritic species avoiding very turbid waters and areas with reduced salinity such as estuaries. May form schools of varying size. Feeds on a variety of fishes, cephalopods, and crustaceans, particularly stomatopod larvae and prawns.
Distribution	Widespread in the Indo-West Pacific from Red Sea and East Africa to New Guinea, north to Japan south to Australia. It is a common species in Taiwan, especially in eastern and southern part.
Utility	Marketed mainly fresh and dried salted, but also smoked, canned and frozen.