Rio Red grapefruit develops attractive red and pink skin blush where fruit touch or where fruit are shaded inside the tree canopy. Rio Red fruit have a tendency to develop puffiness and elongated stem ends of
fruit. Rio Red grapefruit develops red internal fruit color under Egypt growing weather conditions. Color intensity is usually similar to Star Ruby but may be slightly less intense in some seasons. Initial fruit quality
assessment for red fleshed grapefruit in Egypt indicate that achieving a Brix: acid ratio higher than 6:1 is extremely difficult.