If using fresh conch meat, clean and dice it into small pieces. If using frozen conch, thaw it and dice it.
In a large mixing bowl, combine the flour, cornmeal, baking powder, salt, black pepper, paprika, thyme, and cayenne pepper (if using). Mix well.
In a separate bowl, whisk together the milk and egg. Gradually add the wet ingredients to the dry ingredients, stirring until you have a smooth batter.
Fold in the chopped onion, bell pepper, garlic, and diced conch into the batter, mixing until evenly distributed.
Heat vegetable oil in a large skillet or deep fryer to 350°F (175°C). The oil should be about 2 inches deep for frying.
Drop spoonfuls of the batter into the hot oil, making sure not to overcrowd the pan. Fry the fritters until they are golden brown and crispy, about 3-4 minutes per side. Use a slotted spoon to remove them from the oil and drain on paper towels.
Enjoy your meal!