Anaheim peppers are typically longer and less curved than Cubanelle peppers. They are also sweeter and have slightly thicker skin.  Cubanelle peppers are more curved and thinner-skinned, with a less spicy flavor. A cubanelle pepper is a mild bell pepper. It looks like an anaheim but with less wrinkled skin and turns yellow rather than red when mature.  They are also called finge or Italian frying peppers because their tall, slender shape makes them ideal for stuffing.