The Ryukin is a popular and hardy fancy goldfish variety, well-known for its distinctive short, deep bodyand a prominent hump on the backbehind its head.
Key Characteristics
- Appearance: They have a pointed head, a triangular body shape, and can have long or short fins, often with a large, flowing triple or quadruple tail.
- Size: Ryukin can grow to approximately 8 inches (21 cm) in length, and sometimes up to 10 inches in large aquariums or ponds.
- Coloration: They come in a wide range of colors, including solid deep-red, red-and-white, white, orange, silver, blue, black, and calico (a mix with black specks).
- Origin: The Ryukin is Chinese in origin but was named because it arrived in Japan via the Ryukyu Islands in the 1770s.
Care Considerations
- Tank Mates: Ryukin are good, but not strong, swimmers. They should be kept with other slow-moving, fancy goldfish varieties, as fast-swimming, single-tailed types like Comets will outcompete them for food.
- Diet: They are omnivores. To prevent digestive and balance problems common in their short-bodied shape, it is recommended to feed them sinking pellets or gel food, and ideally soak dry food before feeding.
- Water Conditions: Ryukin prefer water temperatures between 65-75°F (18-24°C) and require good filtration to manage their waste output.
