Dice fresh fish into small cubes.
Chop avocado, scallions, and optional vegetables.
Mix pickled vegetables in a small bowl.
Prepare sauces: spicy mayo, Sriracha mayo, or ponzu/soy sauce.
Spread tortilla chips evenly on a large serving plate.
Ensure chips are not overlapping too much for even topping coverage.
Evenly distribute diced fish over chips.
Sprinkle avocado, pickled vegetables, scallions, and seaweed salad over fish.
Drizzle sauces evenly on top.
Garnish with sesame seeds and optional jalapeños or mango.
Serve immediately to maintain chip crunchiness.