Place large stockpot over medium-high heat for 1 minute; add oil. Add onion; cook 3 minutes or until translucent. Add tomatoes, tomato juice, okra, bay leaves, thyme, oregano and potatoes. Bring to a simmer, and cook 10 minutes. Sprinkle catfish with seafood seasoning. Add catfish to pot; continue to simmer 6 minutes or until catfish is cooked through. Add sugar, vinegar and hot sauce; season with salt and pepper to taste. Serve with cooked rice.