Preheat oven to 400 degrees.
Lightly grease a baking dish.
Rinse fish fillets under cold water, and pat dry with a paper towel.
Pour half the salsa on the bottom of the baking dish.
Lay fillets side by side in the prepared baking dish.
Pour the remaining salsa over the top.
Sprinkle evenly with the shredded cheese.
In a plastic bag add the corn chips and crush with a rolling pin.
Top with the crushed corn chips.
Bake, uncovered, for 30 minutes or until fish flake with a fork.
Garnish with sliced avocado and sour cream if desired.
Serve with a side of rice, corn or beans.
