In a large bowl, toss the coleslaw mix, tartar sauce, salt, cumin and pepper; set aside. In a large nonstick skillet, cook tilapia in oil and lemon juice over medium heat for 4-5 minutes on each side or until fish flakes easily with a fork. , Place tilapia on tortillas; top with coleslaw mixture. Serve with cheese, tomato and avocado if desired.