Albacore and Yellowfin are two species of tuna, both of which are popularly consumed around the world. Albacore is a large species of tuna that can reach up to 6 feet in length and weigh up to 200 pounds. It is known for its mild flavor and firm texture. Yellowfin is a smaller species of tuna that typically reaches up to 3 feet in length and weighs up to 100 pounds. It is known for its bright yellow fins and its sweet, mild flavor. Both species are highly sought after for their culinary uses.