Seafood biscuit with crab and shrimp

Ingredients:

1 tablespoon olive oil
1/2 onion, finely chopped
1/4 cup celery, finely chopped
1/4 cup carrots, finely chopped
2 garlic, finely chopped
2 tablespoons tomato paste
1 teaspoon red pepper powder
1/4 teaspoon cayenne pepper (optional, for seasoning)
Salt and pepper to taste
1/4 cup all-purpose flour
4 cups seafood products or chicken broth
1 cup heavy
1/2 pound cooked rabbit meat, skin removed
1/2 pound cooked bell pepper, peeled, deveined and chopped
2 tablespoons (optional)
Fresh herbs for sauce