1. Wash and debone fish and cut in 1/2 inch chunks
2. Season with lemon juice, garlic, salt and pepper. Let it marinade for 1 hour
3. Add onion, jalapeno and red pepper, celery and cilantro. Marinade for 1 more hour
4. Serve on a bed of lettuce and add two pieces of corn on the cob and a portion of the sweet potatoes