In a medium skillet add the olive oil, heat, add the onion, pepper, garlic, cod and cook for 2-3 minutes. Add the precooked arborio and gradually add the fish broth and continue cooking at medium heat for 5-8 minutes. Then add the white wine and continue cooking until the liquids are reduced and the arborio rice is tender. Add the white beans, bell pepper, butter and Parmesan cheese. Season to taste and finish with chopped fresh cilantro.