Blackfin Tuna

Blackfin tuna is the smallest tuna species in the Thunnus genus, generally growing to a maximum of 100 centimetres (39 in) in length and weighing 21 kg (46 lbs). Blackfin have oval shaped bodies, black backs with a slight yellow on the finlets, and have yellow on the sides of their body.

Blackfin are only found in the western Atlantic from Cape Cod to Brazil.
These tuna do not consume as much fish in their diet as other tunas, and will eat the tiny larvae of stomatopods (king shrimp or mantis shrimp), true shrimp, and crabs, as well as small fish. They do, of course, also eat juvenile and adult fish and squid. They are a short-lived, fast-growing species; a 5 year old fish would be considered old. They reach sexual maturity at two years old, and spawn in the open sea during the summer.

Blackfin tuna are a warmer-water fish, preferring water temperatures over 68°F (20°C). What they lack in size, they make up for in numbers and willingness to bite. There are scattered records of blackfin tuna occurring as far north as Martha's Vineyard, Massachusetts, but the usual range is from North Carolina to Rio de Janeiro, Brazil, including the Caribbean Sea and the Gulf of Mexico.

Species Information

Scientific Name:Thunnus atlanticus
Environment:Offshore
Ideal Temp:>= 68°F (20°C)
Technique:Casting, Chunking, Fly, Jigging, Trolling
Lure Type:Flies, Jigs, Plugs, Spoons, Topwater, Trolling
World Record:22.39 kg (49 lb 6 oz) Marathon, Florida , USA
Other Names:blackfin, Bermuda tuna, blackfinned albacore, blackfin tuna, black fin

Latest Blackfin Tuna Fishing Reports and Spots

9/18/21 - 9/18/2021 6:17:00 AM

Body:    Offshore fishing on Saturday brought some scattered catches of Blackfin Tuna a few bailer Dolphin Barracuda and several Tilefish. Insh (View)


Sept. 8 - 9/9/2021 6:29:00 PM

Today was a good day to catch some #mahi and #blackfin #tuna #fearless #fearlessfishing #charter #conch27 (View)


9/13 & 9/14 - 9/14/2021 6:16:00 AM

Body:  Great fishing inshore and offshore the last two days! Offshore boats brought in catches of Yellowfin and Blackfin Tuna scattered Dolphin (View)


9/15/21 - 9/15/2021 5:33:00 AM

Body:  Offshore boats continued to bring in nice catches on Wednesday with Blackfin Tuna Wahoo King Mackerel Dolphin Barracuda Triggerfish and (View)


9/11/21 - 9/11/2021 5:51:00 AM

Body:  Saturday brought in some decent catches for offshore boats with a mix of bailer and gaffer Dolphin a few Blackfin Tuna and some very nic (View)


9/12/21 - 9/12/2021 9:09:00 AM

Body:  We saw some great catches on Sunday! Offshore boats had good catches of bailer Dolphin a few Blackfin Tuna Yellowfin several nice Wahoo (View)


Slow fishing for new friends - 9/7/2021 1:13:27 PM

Slick calm on the ocean today but overall the fishing was slow. We managed a few blackfin tun and a dolphin (View)


Sat 04 Sep 2021 21:36:00 +0000 - 9/4/2021 5:36:00 PM

It was a struggle again today. We got struck by the Blackfins once and that was about it. A little breezy but the ocean wasn't too bad. Thanks (View)


Labor Day Weekend Fishing Outlook (9/3-9/6/2021) - 9/2/2021 7:28:51 PM

OFFSHORE- A fair scattering of dolphin popped back up this week. Best depth for them bounced around a bit; but 400-600' seemed to hold a pretty (View)


8/29 - 8/31 - 9/1/2021 5:23:38 AM

Body:  Fishing picked up slightly for offshore boats over the last few days with catches of Wahoo Dolphin Blackfin and Yellowfin Tuna and vario (View)