{
  "type": "minecraft:ocean_ruin",
  "biome_temp": "warm",
  "biomes": "#minecraft:has_structure/ocean_ruin_warm",
  "cluster_probability": 0.9,
  "large_probability": 0.3,
  "spawn_overrides": {
    "water_ambient":  {
      "bounding_box": "full",
      "spawns": [
        {
          "type": "minecraft:tropical_fish",
          "maxCount": 3,
          "minCount": 3,
          "weight": 100
        }
      ]
    }
  },
  "step": "surface_structures"
}