"не учи плавать щуку, щука знает свою науку" meaning in Russian

{
  "etymology_text": "Literally, \"don't teach a pike to swim, the pike knows his own science\" [ie, how to swim].",
  "forms": [
    {
      "form": "не учи́ пла́вать щу́ку",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "щу́ка зна́ет свою́ нау́ку",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ne učí plávatʹ ščúku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ščúka znájet svojú naúku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "proverb",
        "head": "не учи́ пла́вать щу́ку, щу́ка зна́ет свою́ нау́ку"
      },
      "expansion": "не учи́ пла́вать щу́ку, щу́ка зна́ет свою́ нау́ку • (ne učí plávatʹ ščúku, ščúka znájet svojú naúku)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "proverb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian proverbs",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "don't teach your grandmother to suck eggs"
      ],
      "id": "en-не_учи_плавать_щуку,_щука_знает_свою_науку-ru-proverb-cniWTMl3",
      "links": [
        [
          "don't teach your grandmother to suck eggs",
          "don't teach your grandmother to suck eggs"
        ]
      ],
      "synonyms": [
        {
          "word": "не учи́ учёного"
        },
        {
          "word": "учёного учи́ть — то́лько по́ртить"
        },
        {
          "word": "я́йца ку́рицу не у́чат"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪ‿ʊˈt͡ɕi ˈpɫavət͡ɕ ˈɕːukʊ | ˈɕːukə ˈzna(j)ɪt͡s svɐˈju nɐˈukʊ]"
    }
  ],
  "word": "не учи плавать щуку, щука знает свою науку"
}

{
  "etymology_text": "Literally, \"don't teach a pike to swim, the pike knows his own science\" [ie, how to swim].",
  "forms": [
    {
      "form": "не учи́ пла́вать щу́ку",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "щу́ка зна́ет свою́ нау́ку",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ne učí plávatʹ ščúku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ščúka znájet svojú naúku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "proverb",
        "head": "не учи́ пла́вать щу́ку, щу́ка зна́ет свою́ нау́ку"
      },
      "expansion": "не учи́ пла́вать щу́ку, щу́ка зна́ет свою́ нау́ку • (ne učí plávatʹ ščúku, ščúka znájet svojú naúku)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "proverb",
  "senses": [
    {
      "categories": [
        "Russian entries with incorrect language header",
        "Russian lemmas",
        "Russian multiword terms",
        "Russian proverbs",
        "Russian rhyming phrases",
        "Russian terms with IPA pronunciation"
      ],
      "glosses": [
        "don't teach your grandmother to suck eggs"
      ],
      "links": [
        [
          "don't teach your grandmother to suck eggs",
          "don't teach your grandmother to suck eggs"
        ]
      ],
      "synonyms": [
        {
          "word": "не учи́ учёного"
        },
        {
          "word": "учёного учи́ть — то́лько по́ртить"
        },
        {
          "word": "я́йца ку́рицу не у́чат"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪ‿ʊˈt͡ɕi ˈpɫavət͡ɕ ˈɕːukʊ | ˈɕːukə ˈzna(j)ɪt͡s svɐˈju nɐˈukʊ]"
    }
  ],
  "word": "не учи плавать щуку, щука знает свою науку"
}