{
    "river": {
        "name": "La Marsange",
        "course_code": "F4770600",
        "topage_code": null
    },
    "dataset": "species",
    "extracted_at": "2026-09-22T02:45:22+02:00",
    "source_note": "RivièreScope agrège des données publiques ; consultez /sources/ pour les producteurs et licences.",
    "data": [
        {
            "species_code": "2113",
            "common_name": "Goujon commun",
            "scientific_name": "Gobio gobio",
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            "observation_count": 710,
            "individual_count": null,
            "first_year": 1999,
            "last_year": 2006
        },
        {
            "species_code": "2071",
            "common_name": "Loche franche",
            "scientific_name": "Barbatula barbatula",
            "operation_count": 8,
            "observation_count": 485,
            "individual_count": null,
            "first_year": 1999,
            "last_year": 2006
        },
        {
            "species_code": "31041",
            "common_name": "Chevaine",
            "scientific_name": "Leuciscus cephalus",
            "operation_count": 7,
            "observation_count": 333,
            "individual_count": null,
            "first_year": 1999,
            "last_year": 2005
        },
        {
            "species_code": "2133",
            "common_name": "Gardon",
            "scientific_name": "Rutilus rutilus",
            "operation_count": 6,
            "observation_count": 271,
            "individual_count": null,
            "first_year": 1999,
            "last_year": 2005
        },
        {
            "species_code": "2167",
            "common_name": "Epinochette",
            "scientific_name": "Pungitius pungitius",
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            "observation_count": 239,
            "individual_count": null,
            "first_year": 1999,
            "last_year": 2006
        },
        {
            "species_code": "2125",
            "common_name": "Vairon",
            "scientific_name": "Phoxinus phoxinus",
            "operation_count": 6,
            "observation_count": 122,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2006
        },
        {
            "species_code": "2165",
            "common_name": "Epinoche",
            "scientific_name": "Gasterosteus aculeatus",
            "operation_count": 5,
            "observation_count": 31,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2006
        },
        {
            "species_code": "2122",
            "common_name": "Vandoise",
            "scientific_name": "Leuciscus leuciscus",
            "operation_count": 5,
            "observation_count": 23,
            "individual_count": null,
            "first_year": 1999,
            "last_year": 2003
        },
        {
            "species_code": "2038",
            "common_name": "Anguille européenne",
            "scientific_name": "Anguilla anguilla",
            "operation_count": 4,
            "observation_count": 15,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2003
        },
        {
            "species_code": "2193",
            "common_name": "Perche",
            "scientific_name": "Perca fluviatilis",
            "operation_count": 4,
            "observation_count": 13,
            "individual_count": null,
            "first_year": 1999,
            "last_year": 2002
        },
        {
            "species_code": "2137",
            "common_name": "Tanche",
            "scientific_name": "Tinca tinca",
            "operation_count": 3,
            "observation_count": 4,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2002
        },
        {
            "species_code": "2135",
            "common_name": "Rotengle",
            "scientific_name": "Scardinius erythrophthalmus",
            "operation_count": 1,
            "observation_count": 3,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2000
        },
        {
            "species_code": "2131",
            "common_name": "Bouvière",
            "scientific_name": "Rhodeus amarus",
            "operation_count": 1,
            "observation_count": 2,
            "individual_count": null,
            "first_year": 2005,
            "last_year": 2005
        },
        {
            "species_code": "68137",
            "common_name": "Ecrevisse américaine",
            "scientific_name": "Faxonius limosus",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2004,
            "last_year": 2004
        }
    ]
}