BLUE FIN TUNA / 4.1 NORTHERN BLUE FIN TUNA / 4.2 SOUTHERN BLUE FIN TUNA (THUNNUS THYNNUS)
   
 
   
 
English name : Blue fin: Northern blue fin and Southern blue fin
Latin name : Thunnus thynnus
Length (Inches) : 36-84
Weight (Kg.) : 99-185
 
Characteristics :

It has a cone-shaped head with a large mouth. It has a thin crescent-shaped tail. Its top is dark blue color, and its underside is grayish color with silvery spots. This species grows slowly and lives long.
 
Habitat : Southern Blue fins can be found in the temperate ocean of the Southern Hemisphere. Northern Blue fins can be found in the North Pacific and the North Atlantic: Newfoundland, Iceland and Norway in the Atlantic.
 
Harvest Areas : Northern Blue fin tunas are mainly caught from the northwestern Pacific Ocean but Southern Blue fin tunas are mainly caught from the Indian Ocean.
 
Popular Production Form : sashimi
 
Preparation : It is good for medium rare cooking because it will become light, firm meat and the flavor is intense. Blue fin broiled, grilled or baked is delicious.
 
Sources : http://www.foodtrader.com
http://www.services.fishmonger.com
http://www.gofish.com
 
Nutrition Facts Serving Size : 100g/3.5 OZ (raw)
 

Amount per serving

Calories

158

Total fat

6.1 g.

Saturated Fat

1.6 g.

Cholesterol

38 mg.

Sodium

58 mg.
Potassium
252 mg.

Protein

24 g.

Iron

1 g.
Source : http://www.services.fishmonger.com
 

4.1 Northern Blue fin tuna makes extensive migrations. It is the slowest growing tuna species, which can reach an age of 20 years or more, which explains her size. It is extremely popular in Japan for sashimi, due to its large size, color, texture and high fat content of the meat. Its quality in combination with its rarity makes it the most expensive tuna species.
 

4.2 Southern Blue fin tuna are a member of the family Scombridae and are recognized by their relatively short pectoral fins and robust body. Their upper bodies are blackish-blue and the underside is a silver color. Juvenile and adult Southern Blue fin are opportunistic feeders that feed mainly on squid, crustaceans, fish and plank tonic animals.
Confusing Species : Long tail tuna are similar in appearance to Southern Blue fin, but can be distinguished by their shorter pectoral fins and dark caudal keels.