{
    "river": {
        "name": "L'Arc",
        "course_code": "Y4--0200",
        "topage_code": null
    },
    "dataset": "species",
    "extracted_at": "2026-09-22T03:10:48+02:00",
    "source_note": "RivièreScope agrège des données publiques ; consultez /sources/ pour les producteurs et licences.",
    "data": [
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            "species_code": "31041",
            "common_name": "Chevaine",
            "scientific_name": "Leuciscus cephalus",
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            "observation_count": 494,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2038",
            "common_name": "Anguille européenne",
            "scientific_name": "Anguilla anguilla",
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            "observation_count": 327,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2096",
            "common_name": "Barbeau fluviatile",
            "scientific_name": "Barbus barbus",
            "operation_count": 8,
            "observation_count": 165,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2088",
            "common_name": "Spirlin",
            "scientific_name": "Alburnoides bipunctatus",
            "operation_count": 9,
            "observation_count": 162,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2183",
            "common_name": "Mulet porc",
            "scientific_name": "Liza ramada",
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            "observation_count": 123,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2104",
            "common_name": "Hotu",
            "scientific_name": "Chondrostoma nasus",
            "operation_count": 8,
            "observation_count": 90,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2022
        },
        {
            "species_code": "2113",
            "common_name": "Goujon commun",
            "scientific_name": "Gobio gobio",
            "operation_count": 9,
            "observation_count": 87,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2090",
            "common_name": "Ablette",
            "scientific_name": "Alburnus alburnus",
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            "observation_count": 73,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "31135",
            "common_name": "Toxostome",
            "scientific_name": "Parachondrostoma toxostoma",
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            "observation_count": 60,
            "individual_count": null,
            "first_year": 2010,
            "last_year": 2020
        },
        {
            "species_code": "2208",
            "common_name": "Gambusie de l'ouest",
            "scientific_name": "Gambusia affinis",
            "operation_count": 4,
            "observation_count": 57,
            "individual_count": null,
            "first_year": 2014,
            "last_year": 2022
        },
        {
            "species_code": "2071",
            "common_name": "Loche franche",
            "scientific_name": "Barbatula barbatula",
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            "observation_count": 30,
            "individual_count": null,
            "first_year": 2010,
            "last_year": 2024
        },
        {
            "species_code": "2182",
            "common_name": "Mulet doré",
            "scientific_name": "Liza aurata",
            "operation_count": 1,
            "observation_count": 17,
            "individual_count": null,
            "first_year": 2020,
            "last_year": 2020
        },
        {
            "species_code": "2102",
            "common_name": "Carassin commun",
            "scientific_name": "Carassius carassius",
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            "observation_count": 5,
            "individual_count": null,
            "first_year": 2012,
            "last_year": 2024
        },
        {
            "species_code": "2122",
            "common_name": "Vandoise",
            "scientific_name": "Leuciscus leuciscus",
            "operation_count": 1,
            "observation_count": 5,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2008
        },
        {
            "species_code": "2110",
            "common_name": "Carpe commune",
            "scientific_name": "Cyprinus carpio",
            "operation_count": 3,
            "observation_count": 4,
            "individual_count": null,
            "first_year": 2010,
            "last_year": 2022
        },
        {
            "species_code": "68137",
            "common_name": "Ecrevisse américaine",
            "scientific_name": "Faxonius limosus",
            "operation_count": 3,
            "observation_count": 4,
            "individual_count": null,
            "first_year": 2016,
            "last_year": 2022
        },
        {
            "species_code": "2045",
            "common_name": "Blennie",
            "scientific_name": "Salaria fluviatilis",
            "operation_count": 4,
            "observation_count": 4,
            "individual_count": null,
            "first_year": 2012,
            "last_year": 2024
        },
        {
            "species_code": "2203",
            "common_name": "Flet commun",
            "scientific_name": "Platichthys flesus",
            "operation_count": 3,
            "observation_count": 3,
            "individual_count": null,
            "first_year": 2010,
            "last_year": 2018
        },
        {
            "species_code": "2133",
            "common_name": "Gardon",
            "scientific_name": "Rutilus rutilus",
            "operation_count": 2,
            "observation_count": 3,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2014
        },
        {
            "species_code": "2216",
            "common_name": "Truite arc-en-ciel",
            "scientific_name": "Oncorhynchus mykiss",
            "operation_count": 2,
            "observation_count": 2,
            "individual_count": null,
            "first_year": 2012,
            "last_year": 2020
        },
        {
            "species_code": "2165",
            "common_name": "Epinoche",
            "scientific_name": "Gasterosteus aculeatus",
            "operation_count": 1,
            "observation_count": 2,
            "individual_count": null,
            "first_year": 2020,
            "last_year": 2020
        },
        {
            "species_code": "2129",
            "common_name": "Pseudorasbora",
            "scientific_name": "Pseudorasbora parva",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2024,
            "last_year": 2024
        }
    ]
}