What do Guppies Eat? Best Food for Guppies Explained Frozen foods are usually high in protein and can be a great addition to a guppy’s diet. Both pellets and flakes offer a balanced diet that includes essential nutrients such as proteins, fats, carbohydrates, vitamins, and minerals. However, it is important to note that not all guppy foods are created equal. But you can feed them any time they will have at least fifteen minutes with lights on around the aquarium. …