{
    "river": {
        "name": "l'Aven",
        "course_code": "J46-0300",
        "topage_code": null
    },
    "dataset": "species",
    "extracted_at": "2026-09-22T02:00:37+02:00",
    "source_note": "RivièreScope agrège des données publiques ; consultez /sources/ pour les producteurs et licences.",
    "data": [
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            "observation_count": 4613,
            "individual_count": null,
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            "last_year": 2025
        },
        {
            "species_code": "2125",
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            "observation_count": 3600,
            "individual_count": null,
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            "last_year": 2025
        },
        {
            "species_code": "2221",
            "common_name": "Truite de riviere",
            "scientific_name": "Salmo trutta",
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            "observation_count": 3205,
            "individual_count": null,
            "first_year": 1987,
            "last_year": 2025
        },
        {
            "species_code": "2220",
            "common_name": "Saumon atlantique",
            "scientific_name": "Salmo salar",
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            "observation_count": 3000,
            "individual_count": null,
            "first_year": 1987,
            "last_year": 2025
        },
        {
            "species_code": "2071",
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            "scientific_name": "Barbatula barbatula",
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            "observation_count": 1572,
            "individual_count": null,
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            "last_year": 2025
        },
        {
            "species_code": "2038",
            "common_name": "Anguille européenne",
            "scientific_name": "Anguilla anguilla",
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            "observation_count": 977,
            "individual_count": null,
            "first_year": 1987,
            "last_year": 2025
        },
        {
            "species_code": "2113",
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            "scientific_name": "Gobio gobio",
            "operation_count": 37,
            "observation_count": 220,
            "individual_count": null,
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            "last_year": 2025
        },
        {
            "species_code": "2133",
            "common_name": "Gardon",
            "scientific_name": "Rutilus rutilus",
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            "observation_count": 174,
            "individual_count": null,
            "first_year": 1990,
            "last_year": 2022
        },
        {
            "species_code": "2193",
            "common_name": "Perche",
            "scientific_name": "Perca fluviatilis",
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            "observation_count": 24,
            "individual_count": null,
            "first_year": 2017,
            "last_year": 2019
        },
        {
            "species_code": "2151",
            "common_name": "Brochet commun",
            "scientific_name": "Esox lucius",
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            "observation_count": 19,
            "individual_count": null,
            "first_year": 1993,
            "last_year": 2023
        },
        {
            "species_code": "2224",
            "common_name": "Truite de mer",
            "scientific_name": "Salmo trutta",
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            "observation_count": 6,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2017
        },
        {
            "species_code": "2216",
            "common_name": "Truite arc-en-ciel",
            "scientific_name": "Oncorhynchus mykiss",
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            "observation_count": 3,
            "individual_count": null,
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            "last_year": 1991
        },
        {
            "species_code": "2099",
            "common_name": "Brème bordelière",
            "scientific_name": "Blicca bjoerkna",
            "operation_count": 1,
            "observation_count": 2,
            "individual_count": null,
            "first_year": 2017,
            "last_year": 2017
        },
        {
            "species_code": "2137",
            "common_name": "Tanche",
            "scientific_name": "Tinca tinca",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2017,
            "last_year": 2017
        },
        {
            "species_code": "2086",
            "common_name": "Brème commune",
            "scientific_name": "Abramis brama",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2013,
            "last_year": 2013
        },
        {
            "species_code": "2012",
            "common_name": "Lamproie de Planer",
            "scientific_name": "Lampetra planeri",
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            "observation_count": 1,
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            "first_year": 2011,
            "last_year": 2011
        },
        {
            "species_code": "2112",
            "common_name": "Goujon indéterminé (Gobio)",
            "scientific_name": "Gobio sp.",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2025,
            "last_year": 2025
        },
        {
            "species_code": "2122",
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            "scientific_name": "Leuciscus leuciscus",
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            "observation_count": 1,
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            "last_year": 2008
        },
        {
            "species_code": "2090",
            "common_name": "Ablette",
            "scientific_name": "Alburnus alburnus",
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            "observation_count": 1,
            "individual_count": null,
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            "last_year": 2005
        }
    ]
}