tuna fish discriptions

Doubled · 09-16-2005, 07:34 AM

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 · 09-16-2005, 08:03 AM

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 · 09-16-2005, 09:18 AM

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

Younger · 09-16-2005, 10:36 AM

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

johnseafood · 09-16-2005, 11:21 AM

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 · 09-16-2005, 11:28 AM

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 · 09-16-2005, 11:38 AM

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

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

Brian

Admin · 09-16-2005, 11:38 AM

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 · 09-17-2005, 07:55 AM

thanks guys, I won.

Capt. Brian Daley · 09-17-2005, 01:47 PM

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

09-16-2005, 08:03 AM	#2
striper101 Capt Paul Brady Clean Sweep Sportfishing Join Date: May 2005 Location: Willow Grove/Cape May Posts: 3,273 Credits: 7,568.7 Boat: 36 Contender/38 Fountain Home Port: Cape May Occupation: Drywall Contractor/Charter Captain Blog Entries: 1	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. Last edited by striper101; 09-16-2005 at 02:53 PM.

09-16-2005, 11:28 AM	#6
In_Pursuit Hide- My Wifes Logged On Join Date: Aug 2005 Location: Carrollton, VA. Posts: 167 Credits: 1,511.9 Occupation: Engineer	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 Last edited by In_Pursuit; 09-16-2005 at 05:02 PM.

09-16-2005, 11:38 AM	#8
Admin They say I'm a Spammer Join Date: Jun 2004 Location: Sewell, NJ Posts: 26,700 Credits: 206,725.3 Boat: 33' Hydra Sport - Triple 275 Mercury Verado Home Port: Cape May, NJ Best Catch: Whats Fishing Occupation: Internet Blog Entries: 1	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 __________________ "If I had learned education, I would not have had time to learn anything else." "You have undertaken to cheat me. I won't sue you, for the law is too slow. I will ruin you."

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09-16-2005, 10:36 AM	#4
Younger Crab mustard is good Join Date: Feb 2005 Location: Avalon NJ Posts: 703 Credits: 2,189.3 Boat: Tunacious Home Port: Avalon, NJ Best Catch: Blue Marlin Occupation: Self Employed	Those are bad pics, but pec fin length is a sure identifier.

09-16-2005, 11:21 AM	#5
johnseafood Master Trapper Join Date: Mar 2005 Location: gibbstown NJ Posts: 2,135 Credits: 6,279.3 Occupation: family run business John's Seafood	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

09-16-2005, 11:38 AM	#7
ocnslr Crab mustard is good Join Date: Mar 2005 Location: Norfolk, VA Posts: 945 Credits: 1,548.8 Boat: "C-Time" Grady Islander 270 Home Port: Norfolk, VA Best Catch: Cathy (aka CATHOD) Occupation: Technology Support	This is a good source of all the info you need on Atlantic Tuna. http://www.nmfspermits.com/other/Tuna99.PDF Brian

09-17-2005, 07:55 AM	#9
Doubled Hide- My Wifes Logged On Join Date: Sep 2005 Location: Point Pleasant, NJ Posts: 136 Credits: 1,647.4 Boat: 06 29 regulator Home Port: Point Pleasant Best Catch: any fish is a best catch Occupation: freeloader	thanks guys, I won.

09-17-2005, 01:47 PM	#10
Capt. Brian Daley fishalcoholic :) Join Date: Jul 2005 Location: pt.pleasant nj Posts: 3,379 Credits: 2,704.9 Boat: 42 Bertram & 19 Mako CC Home Port: Pt. Pleasant NJ Best Catch: Many and more to come Occupation: charter captain	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