Source: Wikimedia Commons
Ranchu
AdvancedCarassius auratus var.
The 'King of Goldfish.' Tail-less with a round body and prominent head growth (wen). Active show culture — top specimens fetch hundreds of thousands of yen.
難度
Advanced
溫度
15〜28℃（適温20〜25℃）
壽命
10-15 years
體型
15-25cm
飲食
Goldfish pellets, bloodworms, brine shrimp
關於我們
The Ranchu, often called the "King of Goldfish" in Japan, is a hooded fancy goldfish developed in Japan during the late Edo and Meiji periods. Distinguished by the complete absence of a dorsal fin and a rounded, egg-shaped body, the Ranchu is prized for its symmetrical top-view appearance and the prominent fleshy growth (wen) covering its head. In competitive shows, judges evaluate the quality of the wen, body shape, and overall balance when viewed from above. Ranchu have a gentle temperament and do best when kept with similarly slow-moving varieties. They thrive in shallow tanks or traditional Ranchu bowls with minimal water flow, and some keepers use green water (phytoplankton-rich water) to enhance coloration and wen development. Maintaining stable water quality at pH 7.0–7.5 and avoiding sudden temperature changes are essential for their health.
Source: Wikipedia (CC BY-SA 4.0)
基本資訊
產地
Japan
壽命
10-15 years
體型
15-25cm
溫度
15〜28℃（適温20〜25℃）
飲食
Goldfish pellets, bloodworms, brine shrimp
飼養指南
Container
60cm+ tank or concrete pond. Bare bottom easiest to manage
Water
pH 7.0-7.5 neutral. Weekly 1/3 water changes
Wen Growth
Bloodworms, high-protein food, and clean water promote wen development
Notes
Prone to swim bladder issues. Overfeeding and cold water are main causes
AdvancedPremiumShow cultureWen growth
Ranchu常見問題
Q飼養Ranchu的難度如何？
A
Advanced. 這是一個高級難度的物種。需要專業設備和精確環境控制的高級飼養技能。
QRanchu的理想溫度是多少？
A
Ranchu的理想溫度為15〜28℃（適温20〜25℃）。避免溫度驟變，保持穩定的環境。
QRanchu的壽命是多長？
A
Ranchu的平均壽命為10-15 years。透過適當的護理和營養，牠們可以長壽健康地生活。
QRanchu能長多大？
A
Ranchu成年後通常可達15-25cm。大小可能因飼養條件和個體遺傳而異。
Q應該餵Ranchu什麼？
A
Ranchu的食物為：Goldfish pellets, bloodworms, brine shrimp。目標是適當的餵食頻率和均衡的飲食。
QRanchu的一般價格是多少？
A
Ranchu的價格因品系、大小和血統而有很大差異。請查看我們的市場價格頁面獲取最新價格資訊。
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Ranchu Goldfish Guide — Selection Tips & Show Standards
Complete ranchu goldfish guide: head, body, and tail evaluation, show standards, optimal tank setup, and tips for buying from breeders.
Ranchu Head Growth Techniques — Developing Impressive Wen
How to develop ranchu wen: high-protein feeding, optimal temperature, frequent water changes, shallow container benefits, and genetic factors.
Complete Ranchu Care Guide — Raising, Selection & Show Entry
Complete ranchu guide covering environment, feeding, water changes, culling, and preparation for goldfish shows.
Advanced Ranchu Breeding & Selection Guide for Show Quality
Advanced guide to ranchu breeding: artificial spawning, fry culling criteria, wen development, and show standards.