{
    "river": {
        "name": "L'Aronde",
        "course_code": "H0360600",
        "topage_code": null
    },
    "dataset": "species",
    "extracted_at": "2026-09-22T02:00:34+02:00",
    "source_note": "RivièreScope agrège des données publiques ; consultez /sources/ pour les producteurs et licences.",
    "data": [
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            "observation_count": 899,
            "individual_count": null,
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            "last_year": 2025
        },
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            "species_code": "2133",
            "common_name": "Gardon",
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            "observation_count": 469,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2025
        },
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            "species_code": "2122",
            "common_name": "Vandoise",
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            "observation_count": 386,
            "individual_count": null,
            "first_year": 2013,
            "last_year": 2025
        },
        {
            "species_code": "31041",
            "common_name": "Chevaine",
            "scientific_name": "Leuciscus cephalus",
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            "observation_count": 287,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2025
        },
        {
            "species_code": "2071",
            "common_name": "Loche franche",
            "scientific_name": "Barbatula barbatula",
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            "observation_count": 281,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2025
        },
        {
            "species_code": "2038",
            "common_name": "Anguille européenne",
            "scientific_name": "Anguilla anguilla",
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            "observation_count": 239,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2025
        },
        {
            "species_code": "2113",
            "common_name": "Goujon commun",
            "scientific_name": "Gobio gobio",
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            "observation_count": 219,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2025
        },
        {
            "species_code": "2193",
            "common_name": "Perche",
            "scientific_name": "Perca fluviatilis",
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            "observation_count": 90,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2025
        },
        {
            "species_code": "2221",
            "common_name": "Truite de riviere",
            "scientific_name": "Salmo trutta",
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            "observation_count": 71,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2025
        },
        {
            "species_code": "2012",
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            "observation_count": 60,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2023
        },
        {
            "species_code": "2167",
            "common_name": "Epinochette",
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            "observation_count": 57,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2025
        },
        {
            "species_code": "2010",
            "common_name": "Lamproie indéterminée (genre Lampetra)",
            "scientific_name": "Lampetra spp",
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            "observation_count": 40,
            "individual_count": null,
            "first_year": 2017,
            "last_year": 2025
        },
        {
            "species_code": "2165",
            "common_name": "Epinoche",
            "scientific_name": "Gasterosteus aculeatus",
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            "observation_count": 18,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2021
        },
        {
            "species_code": "2151",
            "common_name": "Brochet commun",
            "scientific_name": "Esox lucius",
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            "observation_count": 13,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2025
        },
        {
            "species_code": "2216",
            "common_name": "Truite arc-en-ciel",
            "scientific_name": "Oncorhynchus mykiss",
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            "observation_count": 12,
            "individual_count": null,
            "first_year": 2013,
            "last_year": 2025
        },
        {
            "species_code": "2090",
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            "scientific_name": "Alburnus alburnus",
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            "observation_count": 8,
            "individual_count": null,
            "first_year": 2021,
            "last_year": 2021
        },
        {
            "species_code": "2086",
            "common_name": "Brème commune",
            "scientific_name": "Abramis brama",
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            "observation_count": 6,
            "individual_count": null,
            "first_year": 2011,
            "last_year": 2025
        },
        {
            "species_code": "2191",
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            "scientific_name": "Gymnocephalus cernua",
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            "observation_count": 3,
            "individual_count": null,
            "first_year": 2021,
            "last_year": 2021
        },
        {
            "species_code": "2088",
            "common_name": "Spirlin",
            "scientific_name": "Alburnoides bipunctatus",
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            "observation_count": 3,
            "individual_count": null,
            "first_year": 2021,
            "last_year": 2023
        },
        {
            "species_code": "2102",
            "common_name": "Carassin commun",
            "scientific_name": "Carassius carassius",
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            "observation_count": 3,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2019
        },
        {
            "species_code": "2110",
            "common_name": "Carpe commune",
            "scientific_name": "Cyprinus carpio",
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            "observation_count": 2,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2013
        },
        {
            "species_code": "2050",
            "common_name": "Perche soleil",
            "scientific_name": "Lepomis gibbosus",
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            "observation_count": 2,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2019
        },
        {
            "species_code": "2137",
            "common_name": "Tanche",
            "scientific_name": "Tinca tinca",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2007,
            "last_year": 2007
        },
        {
            "species_code": "2109",
            "common_name": "Carpe miroir",
            "scientific_name": "Cyprinus carpio",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2013,
            "last_year": 2013
        },
        {
            "species_code": "2104",
            "common_name": "Hotu",
            "scientific_name": "Chondrostoma nasus",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2025,
            "last_year": 2025
        },
        {
            "species_code": "2125",
            "common_name": "Vairon",
            "scientific_name": "Phoxinus phoxinus",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2016,
            "last_year": 2016
        },
        {
            "species_code": "2129",
            "common_name": "Pseudorasbora",
            "scientific_name": "Pseudorasbora parva",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2021,
            "last_year": 2021
        },
        {
            "species_code": "2131",
            "common_name": "Bouvière",
            "scientific_name": "Rhodeus amarus",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2021,
            "last_year": 2021
        },
        {
            "species_code": "2135",
            "common_name": "Rotengle",
            "scientific_name": "Scardinius erythrophthalmus",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2023,
            "last_year": 2023
        },
        {
            "species_code": "2156",
            "common_name": "Lote de rivière",
            "scientific_name": "Lota lota",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2019,
            "last_year": 2019
        }
    ]
}