Blackfin Tuna ID

[Split Bill]

I am trying to get better at distinguishing the difference between Blackfin and Yellowfin tunas (especially with both being caught out of OI right now).

So far I have read that the easiest way to identify a blackfin is to look for a larger eye and also a shorter pec fin.

How do you all quickly tell the difference between a blackfin and a blt yellowfin when they're coming to the gaff?

Does anyone have some good live pics to show as examples? I only found at the dock catches after some searching.

Ed

Below is a picture of Capt. Jay's recent catch on Bite me to perhaps help with the discussion. Nice work by the way, hope you don't mind me using the picture!

[BTH284]

If the size is close to the YFT limit. Look at the pec and **** fins. From what I have found out a blackfin the same size as a yellowfin will fight and dig a lil harder. Eyeball does seem to be bigger.

[Split Bill]

BTH, thanks for the quick reply...you mentioned to: "If the size is close to the YFT limit. Look at the pec and an@l fins."

What specifically are you looking for? Size, color?

Thanks again.
Ed

[BeaufortTuna]

blackfins have black finlets, yellowfins are yellow. also blackfins have very tough skin. those are the quick easy ways to tell.

[BTH284]

If the tuna in question gets in range and it's size looks under 27" I will take some wraps and sling 'em over the gunnel/transom. This way no harm if it is juvey yft. Dehook and toss back. Blackfin....in the box it goes.

If it looks like maybe 27", before the gaff shot I take a quick look at the fins to verify. This would be tuna fishing NC style with windons. Over the shoulder leader to the reel and wrap just before gaffing.

[HOLWACHAGOT]

Under 27" is always a Blackfin.

Here is a pic of one of each.





Holwachagot