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Photo of a Yellowfin Tuna

Species profile

Yellowfin Tuna

Thunnus albacares

Bony fishIUCN: Least Concern1.1K iNat observations

At a glance

Yellowfin Tuna (Thunnus albacares) is an IUCN Least Concern bony-fish species regulated in 8 of 66 jurisdictions tracked by CatchRules across the U.S. and Canada.

The strictest bag limit is 2 (Washington); the most generous is 10 (California).

Across 3 jurisdictions with stated minimum sizes, the average minimum is 34.7 in (≈ 2 ft 11 in).

Confirmed by 37 research-grade iNaturalist observations, with Hawaii, Texas, and North Carolina the top jurisdictions by observation count.

Notable details

  • Yellowfin tuna can exceed 400 pounds and reach over 7 feet in length.
  • Their bright yellow second dorsal fin and anal fin elongate dramatically as the fish matures.
  • Yellowfin frequently school alongside dolphins, whales, and other tuna species in the open ocean.
  • They can dive to depths greater than 1,000 meters when pursuing prey.
  • In Hawaii, yellowfin are called 'ahi' and are a prized choice for sushi and sashimi.

Background

The yellowfin tuna (Thunnus albacares) is a species of tuna found in pelagic waters of tropical and subtropical oceans worldwide.

Background excerpt adapted from Wikipedia's Yellowfin Tuna article (CC BY-SA). Visit Wikipedia for the full entry.

Photo credit: iNaturalist / Wikipedia. Identification reference only — verify regulations with the issuing wildlife agency before retaining a catch.