龍眼（凸眼蘭壽）
The Ryugan, also known as the Dragon Eye Oranda, is a Chinese goldfish variety that combines the plump, rounded body of the Oranda with the bulging, telescope-like eyes of the Demekin. Its name, meaning "dragon eye," comes from the way its well-developed head wen and large protruding eyes evoke the face of a dragon. With its slow, graceful swimming style, it makes a striking centerpiece in any tank. That said, its delicate eyes are prone to injury, so this variety is generally best suited to keepers with some prior experience.
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關於龍眼（凸眼蘭壽）
Ryugan (Dragon Eye Oranda) is a Chinese goldfish variety combining the Oranda's plump body with the Demekin's large bulging eyes. Its head wen and rounded eyes evoke a dragon's face, hence the name — an intermediate-level variety also known as Dragon Eye Oranda.
迎接龍眼（凸眼蘭壽）前需要了解的7件事
1Delicate Bulging Eyes
The large protruding eyes are easily bumped or scratched. Keep the tank layout simple, avoiding sharp decorations or coarse substrate that could injure them.
2Choose Tankmates Carefully
Because its body shape makes fast swimming difficult, quick or aggressive tankmates can injure its eyes and body. Pairing it with other slow-moving goldfish of similar temperament works best.
3Frequent Water Quality Care
This delicate body type is sensitive to poor water quality, so regular water changes and reliable filtration are essential. A buildup of ammonia or nitrite can lead to eye problems and general ill health.
4The Head Wen Develops Slowly
The head wen develops gradually as the fish matures, often taking years to fully form. Growth varies widely between individuals, making it a variety you can enjoy watching change over time.
5Watch for Swim Bladder Issues
Round-bodied goldfish varieties are prone to swim bladder disorder, which can cause floating or sinking issues. Avoid overfeeding, and soaking dry food before feeding can help reduce the risk.
6Feed With Its Eyesight in Mind
With its eyes bulging outward, this variety can be slower to spot or react to food than other goldfish. Watch feeding time closely to make sure it isn't being outcompeted by tankmates.
7Prepare the Tank Beforehand
Before bringing one home, set up a tank with adequate size, filtration, and a safe, low-hazard layout in advance. Take care to acclimate it slowly to its new environment.
龍眼（凸眼蘭壽）的常見問題
- Q.Are Ryugan and Dragon Eye Oranda the same variety?
- A.Yes, Ryugan and Dragon Eye Oranda refer to the same goldfish variety. The name comes from combining the Oranda's body shape with the Demekin's bulging eyes.
- Q.Can beginners keep this goldfish?
- A.The Ryugan is generally considered an intermediate-level variety, requiring extra attention to eye injuries and water quality. It's best suited to keepers who already have some goldfish-keeping experience.
- Q.Is it safe to keep with other goldfish?
- A.Because it isn't a fast swimmer, housing it with quicker fish can lead to it losing out on food or getting its fins and eyes injured. It does best alongside other slow-moving goldfish varieties.
- Q.When does the head wen fully develop?
- A.Head wen growth varies from fish to fish, and it typically takes a matter of years to become fully developed. It's a gradual process best enjoyed with patience.
- Q.Are there any legal regulations on this variety?
- A.The Ryugan (Dragon Eye Oranda) is not subject to CITES.
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