Blackfin tuna hunt both epipelagic (surface) and mesopelagic (deeper water) fish and squid. They also eat crustaceans such as shrimp, crabs, amphipods, stomatopods, and the larvae of decapods. They are a short-lived, fast-growing species; a 5-yr-old fish would be considered old. They reach sexual maturity at the age of two years, and spawn in the open sea during the summer. Blackfin tuna are a warmer-water fish, preferring water temperatures over 20 °C (68 °F).
In 2010, Greenpeace International did not add the blackfin tuna, unlike other tuna species, to its seafood red list. 
- Collette, B.; Amorim, A.F.; Boustany, A.; Carpenter, K.E.; Dooley, J.; de Oliveira Leite Jr., N.; Fox, W.; Fredou, F.L.; Fritzsche, R.; Graves, J.; et al. (2011). "Thunnus atlanticus". IUCN Red List of Threatened Species. Version 2011.2. International Union for Conservation of Nature. Retrieved 13 January 2012.
- Froese, Rainer and Pauly, Daniel, eds. (2012). "Thunnus atlanticus" in FishBase. November 2012 version.
- Greenpeace International Seafood Red list Archived February 5, 2010, at the Wayback Machine.
- Media related to Thunnus atlanticus at Wikimedia Commons
- Data related to Thunnus atlanticus at Wikispecies
- FishBase info for black tuna
- Blackfin Tuna Identification
- Encyclopedia of Life Info for Thunnus atlanticus
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