Combine the red, white, and black peppers, paprika, thyme, oregano, bay leaf, and salt; set aside.
In a heavy pot, 5 quart or larger, heat oil over medium heat, warming the pot first.Add onions, celery, and green pepper.Turn heat to high.Stirring frequently, add garlic, file, hot sauce, and the pepper-herb mixture.Cook for 5 minutes, stirring constantly.
Add tomato sauce, and stir as it reduces over high heat.Add fish stock and bring to a boil.Reduce heat, and simmer for 1 hour, stirring occasionally.
When ready to serve, add shrimp, oysters, and crabmeat.Cover, and wait 5 minutes.Turn off heat, and let stand for 10 minutes.Serve.
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