Dragon fruit, or Pitaya, is high in fiber and low in calories. This fruit has Red-skinned and Yellow-skinned Dragon Fruits or Pitayas | Source. A pitaya /pɪˈtaɪ.ə/ or pitahaya /ˌpɪtəˈhaɪ.ə/ is the fruit of several cactus species indigenous These fruits are commonly known in English as "dragon fruit", reflecting its vernacular Asian names. are also called "pitayas" – for example those of the Peruvian apple cactus (Cereus repandus), which are very rare. When I first laid eyes on a dragon fruit it was love at first sight! totally absorbed in the experience, like Alice in her wonderland of fantasy fruits.