The most expensive variety of Red Dragon Fish is the Blood Red Dragon. This fish, known for its vibrant red color and unique patterns, commands a premium price due to its rarity and the difficulty in breeding it. According to a report by the American Aquarium Association, the Blood Red Dragon can sell for upwards of $10,000 per fish, making it one of the most expensive fish in the world. The high cost is attributed to the fish's limited availability, as only a few breeders have successfully developed the Blood Red Dragon, and the process of breeding it is complex and time-consuming. Additionally, the fish's striking appearance and the cultural significance it holds in some Asian communities further contribute to its high value.