noun
- a small tuna (Thunnus atlanticus) found in Atlantic waters, characterized by dark fins and a streamlined body
Usage: ichthyology; also called blackfin tuna
Examples
- The blackfin is a commercially important species in the Atlantic Ocean.
- Anglers often target blackfin during the summer months.
- Blackfin tuna are smaller than their yellowfin cousins.
- The blackfin's dark coloring helps distinguish it from other tuna species.