Can pitaya (dragon fruit) and fish be eaten together?
Generally speaking, pitaya and fish can be consumed together. The detailed analysis is as follows:

Pitaya is rich in vitamin C, B-complex vitamins, dietary fiber, and various minerals such as potassium. It also contains unique plant-based nutrients, including rare plant albumin and anthocyanins found less commonly in other plants. Vitamin C helps boost immunity and promotes collagen synthesis, while dietary fiber aids intestinal motility and helps prevent constipation. Fish is an excellent source of high-quality protein and is rich in unsaturated fatty acids that benefit cardiovascular health. It also contains vitamins A and D, and various minerals such as calcium and phosphorus, which help maintain bone health and normal body metabolism.
When consumed together, the nutrients in pitaya and fish can complement each other, providing a broader range of nutrients that support normal physiological functions. The dietary fiber and vitamins in pitaya can promote intestinal motility and aid digestion, while the proteins and minerals in fish provide essential nutritional support for the body.
However, it is recommended to consume them in moderation. Due to pitaya's high dietary fiber content and fish's rich protein content, excessive consumption may burden the gastrointestinal tract, leading to indigestion and symptoms such as abdominal pain, diarrhea, and bloating.