In a large saucepan combine water, undrained tomatoes, mixed vegetables, celery, onion, bouillon granules, oregano, garlic, and hot pepper sauce. Bring to boiling; reduce heat. Cover and simmer 10 minutes or until vegetables are tender.
Stir in fish. Return just to boiling; reduce heat. Cover and simmer gently about 5 minutes or until fish flakes easily with a fork. Makes 4 servings.