{
  "params": {
    "pattern": {
      "type": "choice",
      "options": [
        "kohaku",
        "showa",
        "ogon",
        "asagi",
        "tancho"
      ],
      "default": "kohaku",
      "label": "Pattern",
      "describe": "Koi variety: kohaku (white with red patches), showa (black with red and white), ogon (solid metallic gold), asagi (blue-grey back, orange belly and fins), tancho (white with one red spot on the head)."
    },
    "fins": {
      "type": "range",
      "min": 1,
      "max": 2,
      "step": 0.1,
      "default": 1,
      "label": "Fin length",
      "describe": "Fin and tail length. 1 is a standard koi; 2 is a long-finned butterfly koi with trailing fins."
    },
    "whiskers": {
      "type": "toggle",
      "default": true,
      "label": "Barbels",
      "describe": "The two pairs of whiskers (barbels) at the mouth."
    },
    "seed": {
      "type": "range",
      "min": 1,
      "max": 40,
      "step": 1,
      "default": 7,
      "label": "Markings",
      "describe": "Seed for where the colour patches fall; every number is a different fish of the same variety."
    },
    "size": {
      "type": "range",
      "min": 0.4,
      "max": 1.6,
      "step": 0.05,
      "default": 1,
      "label": "Size",
      "describe": "Uniform scale. 1 is 60 cm; 0.4 is a young 25 cm koi; 1.6 is a 1 m jumbo."
    }
  },
  "presets": {
    "butterfly koi": {
      "pattern": "showa",
      "fins": 2
    },
    "golden ogon": {
      "pattern": "ogon",
      "whiskers": true,
      "size": 1.2
    },
    "tancho": {
      "pattern": "tancho"
    }
  },
  "night": null
}