The safest fishing methods involve using fishing lines instead of nets. Those who are concerned should buy tuna that was caught by longlining. With their bright yellow fins and smooth blue-black body, yellowfin are spectacular looking fish, all the more so because they grow to be quite large. It is not unusual for a yellowfin tuna to weigh 300 pounds. Yellowfin tuna is as firm and meaty as swordfish.
Any preparation is appropriate for tuna, especially searing, grilling or broiling.
And it can stand up to assertive sauces or ingredients like those used in salade nicoise.