clownfish

{
  "format_version": "1.10",
  "minecraft:item": {
    "description": {
      "identifier": "minecraft:clownfish"
    },

    "components": {
      "minecraft:use_duration": 32,
      "minecraft:max_damage": 0,
      "minecraft:stacked_by_data": true,
      "minecraft:food": {
        "nutrition": 1,
        "saturation_modifier": "poor"
      }
    }
  }
}