{
  "id": "ranchu-goldfish",
  "name": "兰寿金鱼",
  "category": "金鱼",
  "scientific_name": "Carassius auratus 兰寿品系",
  "canonical_url": "https://www.arowanafish.cn/varieties/ranchu-goldfish",
  "machine_html": "https://www.arowanafish.cn/variety-geo/species/ranchu-goldfish.html",
  "machine_json": "https://www.arowanafish.cn/variety-geo/species/ranchu-goldfish.json",
  "machine_txt": "https://www.arowanafish.cn/variety-geo/species/ranchu-goldfish.txt",
  "image": "https://www.arowanafish.cn/mirrored-assets/baas-api.wanwang.xin/toc/image/preview/ranchu-goldfish-de3955276c.jpg",
  "gallery": [
    "https://www.arowanafish.cn/mirrored-assets/baas-api.wanwang.xin/toc/image/preview/ranchu-goldfish-de3955276c.jpg",
    "https://www.arowanafish.cn/generated-assets/fengshui/goldfish.png",
    "https://www.arowanafish.cn/mirrored-assets/baas-api.wanwang.xin/toc/image/preview/goldfish-15b3a11d6e.jpg"
  ],
  "price_range": "¥80 起",
  "difficulty": "进阶",
  "water_layer": "中层",
  "origin": "中国金鱼文化基础，日本兰寿体系成熟发展",
  "origin_detail": "兰寿以背线、头瘤、尾型和俯视观赏为核心，是金鱼中对水质和体型管理要求较高的品种。",
  "habitat": "适合低水位、缓水流、稳定温差的金鱼缸或周转盆。",
  "summary": "兰寿金鱼观赏重点在背线、头瘤、尾肩和游姿，饲养上要控制水流、投喂和水质。",
  "temperament": "温和，游速慢，适合同类低密度饲养。",
  "adult_size": "12-20 cm",
  "tank_size": "建议低密度饲养，成鱼每尾预留充足水体",
  "water_quality": "18-24°C，pH 7.0-8.0，偏中性至弱碱稳定水体",
  "diet": "金鱼粮、冷冻红虫和蔬食搭配，少量多餐，防止胀肚和水质污染。",
  "compatibility": "适合同类金鱼，不适合与热带大型鱼、快鱼或啃鳍鱼混养。",
  "selection_guide": "看俯视背线、尾型展开、头瘤均衡、游姿平稳和腹部不过分臃肿。",
  "risk_notes": [
    "强水流会影响游姿",
    "过量喂食易失鳔或坏水",
    "夏季高温缺氧风险高"
  ],
  "care_points": [
    "控制水流",
    "低密度饲养",
    "少量多餐",
    "保持底部清洁"
  ],
  "professional_notes": [
    "兰寿更适合俯视和浅水管理，普通高缸强水流并不理想。",
    "体型管理要长期控制食物和水质，不能只看短期增肥。"
  ],
  "parameters": {
    "适宜水温": "18-24°C",
    "pH": "7.0-8.0",
    "硬度": "中等至偏硬",
    "建议饲养": "同类低密度",
    "观察重点": "背线、尾型、头瘤、失鳔"
  },
  "tags": [
    "金鱼",
    "俯视",
    "低水流"
  ]
}