It is widely agreed that albacore tuna caught by pole is the best option as these fish are landed individually. Bluefin tuna - the most prized and the most vulnerable - should be avoided.
Line a baking sheet with parchment paper. In a medium bowl, mix drained tuna, chopped fennel, pickled jalapeños, lemon juice, mayonnaise and chopped parsley until well combined. Season with salt ...
Stir in the tuna and salt. Toss the pasta with the sauce, loosening with a little pasta water if necessary. Serve the tuna pasta sprinkled with the remaining parsley and freshly ground pepper.