{
    "river": {
        "name": "Le Fresquel",
        "course_code": "Y13-0400",
        "topage_code": null
    },
    "dataset": "species",
    "extracted_at": "2026-09-22T01:57:09+02:00",
    "source_note": "RivièreScope agrège des données publiques ; consultez /sources/ pour les producteurs et licences.",
    "data": [
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            "last_year": 2024
        },
        {
            "species_code": "2096",
            "common_name": "Barbeau fluviatile",
            "scientific_name": "Barbus barbus",
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            "observation_count": 725,
            "individual_count": null,
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            "last_year": 2024
        },
        {
            "species_code": "2088",
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            "scientific_name": "Alburnoides bipunctatus",
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            "observation_count": 710,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2024
        },
        {
            "species_code": "2113",
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            "observation_count": 666,
            "individual_count": null,
            "first_year": 1989,
            "last_year": 2022
        },
        {
            "species_code": "31041",
            "common_name": "Chevaine",
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            "observation_count": 554,
            "individual_count": null,
            "first_year": 1989,
            "last_year": 2024
        },
        {
            "species_code": "2133",
            "common_name": "Gardon",
            "scientific_name": "Rutilus rutilus",
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            "observation_count": 401,
            "individual_count": null,
            "first_year": 1989,
            "last_year": 2024
        },
        {
            "species_code": "2131",
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            "scientific_name": "Rhodeus amarus",
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            "observation_count": 271,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2024
        },
        {
            "species_code": "31135",
            "common_name": "Toxostome",
            "scientific_name": "Parachondrostoma toxostoma",
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            "observation_count": 249,
            "individual_count": null,
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            "last_year": 2022
        },
        {
            "species_code": "2129",
            "common_name": "Pseudorasbora",
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            "observation_count": 186,
            "individual_count": null,
            "first_year": 2011,
            "last_year": 2024
        },
        {
            "species_code": "2125",
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            "observation_count": 98,
            "individual_count": null,
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            "last_year": 2022
        },
        {
            "species_code": "2122",
            "common_name": "Vandoise",
            "scientific_name": "Leuciscus leuciscus",
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            "observation_count": 84,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2022
        },
        {
            "species_code": "2112",
            "common_name": "Goujon indéterminé (Gobio)",
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            "observation_count": 74,
            "individual_count": null,
            "first_year": 2024,
            "last_year": 2024
        },
        {
            "species_code": "2038",
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            "scientific_name": "Anguilla anguilla",
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            "observation_count": 54,
            "individual_count": null,
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            "last_year": 2024
        },
        {
            "species_code": "2050",
            "common_name": "Perche soleil",
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            "observation_count": 38,
            "individual_count": null,
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            "last_year": 2012
        },
        {
            "species_code": "2191",
            "common_name": "Grémille",
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            "observation_count": 32,
            "individual_count": null,
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            "last_year": 2018
        },
        {
            "species_code": "2238",
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            "scientific_name": "Silurus glanis",
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            "observation_count": 27,
            "individual_count": null,
            "first_year": 2012,
            "last_year": 2024
        },
        {
            "species_code": "2071",
            "common_name": "Loche franche",
            "scientific_name": "Barbatula barbatula",
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            "observation_count": 20,
            "individual_count": null,
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            "last_year": 2024
        },
        {
            "species_code": "2193",
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            "observation_count": 19,
            "individual_count": null,
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            "last_year": 2020
        },
        {
            "species_code": "2028",
            "common_name": "Ecrevisse de Louisiane",
            "scientific_name": "Procambarus clarkii",
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            "observation_count": 16,
            "individual_count": null,
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            "last_year": 2024
        },
        {
            "species_code": "2110",
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            "scientific_name": "Cyprinus carpio",
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            "observation_count": 14,
            "individual_count": null,
            "first_year": 2003,
            "last_year": 2024
        },
        {
            "species_code": "68137",
            "common_name": "Ecrevisse américaine",
            "scientific_name": "Faxonius limosus",
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            "observation_count": 14,
            "individual_count": null,
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            "last_year": 2024
        },
        {
            "species_code": "2102",
            "common_name": "Carassin commun",
            "scientific_name": "Carassius carassius",
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            "observation_count": 10,
            "individual_count": null,
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            "last_year": 2016
        },
        {
            "species_code": "2124",
            "common_name": "Vairon indéterminé (Phoxinus)",
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            "observation_count": 6,
            "individual_count": null,
            "first_year": 2024,
            "last_year": 2024
        },
        {
            "species_code": "2086",
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            "scientific_name": "Abramis brama",
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            "observation_count": 4,
            "individual_count": null,
            "first_year": 2003,
            "last_year": 2003
        },
        {
            "species_code": "2099",
            "common_name": "Brème bordelière",
            "scientific_name": "Blicca bjoerkna",
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            "observation_count": 3,
            "individual_count": null,
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            "last_year": 2008
        },
        {
            "species_code": "2195",
            "common_name": "Sandre",
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            "observation_count": 2,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2020
        },
        {
            "species_code": "2151",
            "common_name": "Brochet commun",
            "scientific_name": "Esox lucius",
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            "observation_count": 2,
            "individual_count": null,
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            "last_year": 2011
        },
        {
            "species_code": "2045",
            "common_name": "Blennie",
            "scientific_name": "Salaria fluviatilis",
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            "observation_count": 2,
            "individual_count": null,
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            "last_year": 2000
        },
        {
            "species_code": "2123",
            "common_name": "Vandoise rostrée",
            "scientific_name": "Leuciscus burdigalensis",
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            "observation_count": 2,
            "individual_count": null,
            "first_year": 2011,
            "last_year": 2024
        },
        {
            "species_code": "2053",
            "common_name": "Black bass à grande bouche",
            "scientific_name": "Micropterus salmoides",
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            "observation_count": 1,
            "individual_count": null,
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            "last_year": 2000
        },
        {
            "species_code": "2177",
            "common_name": "Poisson-chat",
            "scientific_name": "Ameiurus melas",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2008
        },
        {
            "species_code": "5208",
            "common_name": "Carassin doré",
            "scientific_name": "Carassius auratus auratus",
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            "observation_count": 1,
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            "last_year": 2003
        },
        {
            "species_code": "2221",
            "common_name": "Truite de riviere",
            "scientific_name": "Salmo trutta",
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            "observation_count": 1,
            "individual_count": null,
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            "last_year": 1989
        },
        {
            "species_code": "2135",
            "common_name": "Rotengle",
            "scientific_name": "Scardinius erythrophthalmus",
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            "observation_count": 1,
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            "first_year": 2018,
            "last_year": 2018
        },
        {
            "species_code": "2137",
            "common_name": "Tanche",
            "scientific_name": "Tinca tinca",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2008
        },
        {
            "species_code": "2208",
            "common_name": "Gambusie de l'ouest",
            "scientific_name": "Gambusia affinis",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2024,
            "last_year": 2024
        }
    ]
}