Serve with: Sushi rice, short grain white rice, Jasmine rice, or brown rice
Steps:
Make Sriracha Mayo: Stir together the mayo and Sriracha in a small bowl. Cover and chill until ready to use.
Make Sesame-Soy Sauce: In a bowl, hand-whisk together all Sauce ingredients. Stir cubed tuna/salmon into the sauce, coating well. Cover and keep chilled until ready to assemble bowls.
Assemble Bowls: Divide cooked rice into 4 smaller bowls (or 2 larger bowls). Evenly layer each bowl according to order: lettuce, marinaded tuna/salmon, cucumber, mango, and avocado. Garnish as desired. Drizzle with Sriracha Mayo. Serve immediately.