Rinse the Buzios under cold water. If using clams, scrub them thoroughly and soak them in water with a bit of salt for about 30 minutes to remove any sand. Rinse well and set aside.
Heat the olive oil in a large skillet or pot over medium heat.
Add the chopped onion and cook until softened and translucent.
Stir in the minced garlic and cook for another minute.
Add the chopped tomatoes, red bell pepper, and green bell pepper. Cook until the vegetables are tender and the tomatoes start to break down.
Stir in the ground paprika, black pepper, and salt. Mix well.
If using white wine, pour it into the skillet and cook for a few minutes to allow the alcohol to evaporate and the flavors to meld together.
Add the prepared Buzios to the skillet. Cover and cook for about 5-7 minutes, or until the shellfish open up. Discard any that do not open.
Garnish with fresh chopped parsley.
Enjoy your meal!