renewable-resources/data/minecraft/loot_table/gameplay/fishing/treasure.json

{
  "type": "minecraft:generic",
  "pools": [
    {
      "rolls": 1,
      "entries": [
        { "type": "minecraft:item", "name": "minecraft:name_tag",               "weight": 12 },
        { "type": "minecraft:item", "name": "minecraft:saddle",                 "weight": 12 },
        { "type": "minecraft:item", "name": "minecraft:nautilus_shell",         "weight": 12 },
        { "type": "minecraft:item", "name": "minecraft:experience_bottle",    "weight": 10, "functions": [{ "function": "minecraft:set_count", "count": { "min": 1, "max": 3 } }] },
        { "type": "minecraft:item", "name": "minecraft:enchanted_book",         "weight": 10 },
        { "type": "minecraft:item", "name": "minecraft:diamond",                "weight": 8,  "quality": 2 },
        { "type": "minecraft:item", "name": "minecraft:emerald",                "weight": 8,  "quality": 1 },
        { "type": "minecraft:item", "name": "minecraft:iron_horse_armor",       "weight": 6 },
        { "type": "minecraft:item", "name": "minecraft:golden_horse_armor",     "weight": 5 },
        { "type": "minecraft:item", "name": "minecraft:heart_of_the_sea",       "weight": 4,  "quality": 2 },
        { "type": "minecraft:item", "name": "minecraft:echo_shard",             "weight": 4,  "quality": 1 },
        { "type": "minecraft:item", "name": "minecraft:diamond_horse_armor",    "weight": 3,  "quality": 2 },
        { "type": "minecraft:item", "name": "minecraft:trident",                "weight": 3,  "quality": 2 },
        { "type": "minecraft:item", "name": "minecraft:enchanted_golden_apple", "weight": 1,  "quality": 3 },
        { "type": "minecraft:item", "name": "minecraft:elytra",                 "weight": 1,  "quality": 3 },
        { "type": "minecraft:item", "name": "minecraft:disc_fragment_5",        "weight": 2,  "quality": 1 }
      ]
    }
  ]
}