tuna fish discriptions

[Doubled]

Hey guys,
quick question? What are the easiest ways to tell the difference between a BFT and Yft, besides it size in most cases. This might sound like a dumb questions, but I am in a debate with a buddy right now and want to end it.
Also, Has anyone found any BFT around the Mudhole, Monsterledge area in the last couple weeks.
Thanks

[striper101]

Hope this helps!





Description: The body of the bluefin tuna is cigar-shaped and robust. The head is conical and the mouth rather large. The color is dark blue above and gray below. Bluefin tuna can easily be distinguished from other members of the tuna family by the relatively short length of their pectoral fins. Their livers have a unique and definitive characteristic in that they are covered with blood vessels (striated). In other tunas with short pectoral fins, such vessels are either not present or present in small numbers along the edges.



Description: The body of the yellowfin tuna tapers at both ends (cigar-shaped), and the head is conical. The color is dark brownish blue to dark yellow on the back becoming gray or whitish below. Identifying tunas can be difficult, especially when yellowfin and bigeye tuna are involved. In most cases, the length of the pectoral fins can distinguish each species. The yellowfin has pectoral fins which do not extend past the anal fin; while in bigeye, the pectoral fins extend well past the anal fin. Tuna which cannot be distinguished by external characteristics can be positively identified by liver characteristics. The surface of a yellowfin's liver is smooth while the liver of the bigeye is striated, containing many with small blood vessels along the trailing edge.

[Squidnation]

I have found the quickest way is checking out the pec fins. short and fat, bleufin. long, yellowfin

[Younger]

Those are bad pics, but pec fin length is a sure identifier.

[johnseafood]

the pec fin on a yellow goes past the dorsal fin and on a bft the pec fin doesn't pass or come close to the dorsal fin

[In_Pursuit]

Ok, the pics got much better (love that edit feature). The pec fin on a YFT should be long enough to reach the beginning of the dorsal fin. Here is some Ichtheology info. After all how can you fish for family scrombridae if you don't know what it looks like. Love those scrombridae yep.
http://www.flmnh.ufl.edu/fish/Galler...uefinTuna.html
http://www.flmnh.ufl.edu/fish/Galler...owfinTuna.html

[ocnslr]

This is a good source of all the info you need on Atlantic Tuna.

http://www.nmfspermits.com/other/Tuna99.PDF

Brian

[Admin]

http://www.sportfishermen.com/fishlist/index.php


http://www.sportfishermen.com/fishli...ail.php?ID=187


http://www.sportfishermen.com/fishli...tail.php?ID=29

Took me over a month to build and im still not done still have alot to put in but the pics may help some .

JOhn

[Doubled]

thanks guys, I won.

[Capt. Brian Daley]

If you want to really get tech. all livers on the bft yft big eye tuna are different in texture upon examination. but know the differance before the
kill