1. Preheat oven to 375°.
2. To prepare fish sticks, place flour in a shallow dish or bowl. Place breadcrumbs in a second shallow dish or bowl. Combine 3 tablespoons water and egg in a third shallow dish or bowl, stirring with a whisk.
3. Cut fish into 20 (4 x 1/2-inch) strips. Dredge fish in flour, shaking off excess. Dip fish in egg mixture, and dredge in breadcrumbs. Place on a baking sheet coated with cooking spray. Coat fish with cooking spray.
4. Bake at 375° for 30 minutes or until crisp. Sprinkle fish sticks with salt.
5. To prepare tartar sauce, combine all sauce ingredients in a small bowl. Serve tartar sauce with fish.