"cleaner fish" meaning in English

{
  "forms": [
    {
      "form": "cleaner fishes",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "cleaner fish",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "+",
        "2": "cleaner fish"
      },
      "expansion": "cleaner fish (plural cleaner fishes or cleaner fish)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Fish",
          "orig": "en:Fish",
          "parents": [
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Zoology",
          "orig": "en:Zoology",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Any of many unrelated fishes that provide a service to other fish species by removing dead skin and parasites."
      ],
      "id": "en-cleaner_fish-en-noun-J78o6wJy",
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "service",
          "service"
        ],
        [
          "parasite",
          "parasite"
        ]
      ],
      "raw_glosses": [
        "(zoology) Any of many unrelated fishes that provide a service to other fish species by removing dead skin and parasites."
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "cleaner fish",
          "word": "puhdistajakala"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "soujiuo",
          "sense": "cleaner fish",
          "word": "掃除魚"
        },
        {
          "code": "khb",
          "lang": "Lü",
          "roman": "ṗaaẋiim",
          "sense": "cleaner fish",
          "word": "ᦔᦱᦃᦲᧄ"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "rýba-čístilʹščik",
          "sense": "cleaner fish",
          "tags": [
            "feminine"
          ],
          "word": "ры́ба-чи́стильщик"
        }
      ],
      "wikipedia": [
        "cleaner fish"
      ]
    }
  ],
  "word": "cleaner fish"
}

{
  "forms": [
    {
      "form": "cleaner fishes",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "cleaner fish",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "+",
        "2": "cleaner fish"
      },
      "expansion": "cleaner fish (plural cleaner fishes or cleaner fish)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Fish",
        "en:Zoology"
      ],
      "glosses": [
        "Any of many unrelated fishes that provide a service to other fish species by removing dead skin and parasites."
      ],
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "service",
          "service"
        ],
        [
          "parasite",
          "parasite"
        ]
      ],
      "raw_glosses": [
        "(zoology) Any of many unrelated fishes that provide a service to other fish species by removing dead skin and parasites."
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ],
      "wikipedia": [
        "cleaner fish"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "cleaner fish",
      "word": "puhdistajakala"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "soujiuo",
      "sense": "cleaner fish",
      "word": "掃除魚"
    },
    {
      "code": "khb",
      "lang": "Lü",
      "roman": "ṗaaẋiim",
      "sense": "cleaner fish",
      "word": "ᦔᦱᦃᦲᧄ"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "rýba-čístilʹščik",
      "sense": "cleaner fish",
      "tags": [
        "feminine"
      ],
      "word": "ры́ба-чи́стильщик"
    }
  ],
  "word": "cleaner fish"
}