Here’s what mandarin oranges are, why they’re so good for you and why moderation is still key. "Mandarins" are a type of citrus fruit, similar to oranges . They are known for their bright orange color, sweet taste, and easy-to-peel skin. Varieties of Learn about the history, evolution, description, and cultivation of mandarin orange , a small, rounded citrus tree fruit. Find out the differences between mandarin and other citrus fruits, and the varieties and hybrids of mandarin . What Are Mandarin Oranges ? Mandarin oranges (Citrus reticulata) are small, easy-to-peel citrus fruits known for their sweet, juicy flavor. They belong to the same family as oranges but are smaller, less acidic, and easier to segment. Popular varieties include clementines, tangerines, and satsumas.