{
    "river": {
        "name": "La Souleuvre",
        "course_code": "I42-0400",
        "topage_code": null
    },
    "dataset": "species",
    "extracted_at": "2026-09-22T01:57:07+02:00",
    "source_note": "RivièreScope agrège des données publiques ; consultez /sources/ pour les producteurs et licences.",
    "data": [
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            "observation_count": 2081,
            "individual_count": null,
            "first_year": 1985,
            "last_year": 2025
        },
        {
            "species_code": "2071",
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            "scientific_name": "Barbatula barbatula",
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            "observation_count": 1712,
            "individual_count": null,
            "first_year": 1985,
            "last_year": 2025
        },
        {
            "species_code": "2080",
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            "scientific_name": "Cottus gobio",
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            "observation_count": 1521,
            "individual_count": null,
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            "last_year": 2025
        },
        {
            "species_code": "2113",
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            "scientific_name": "Gobio gobio",
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            "observation_count": 779,
            "individual_count": null,
            "first_year": 1985,
            "last_year": 2025
        },
        {
            "species_code": "2122",
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            "scientific_name": "Leuciscus leuciscus",
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            "observation_count": 433,
            "individual_count": null,
            "first_year": 1985,
            "last_year": 2025
        },
        {
            "species_code": "2221",
            "common_name": "Truite de riviere",
            "scientific_name": "Salmo trutta",
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            "observation_count": 324,
            "individual_count": null,
            "first_year": 1985,
            "last_year": 2025
        },
        {
            "species_code": "2220",
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            "scientific_name": "Salmo salar",
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            "observation_count": 318,
            "individual_count": null,
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            "last_year": 2025
        },
        {
            "species_code": "31041",
            "common_name": "Chevaine",
            "scientific_name": "Leuciscus cephalus",
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            "observation_count": 267,
            "individual_count": null,
            "first_year": 1985,
            "last_year": 2025
        },
        {
            "species_code": "2038",
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            "scientific_name": "Anguilla anguilla",
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            "observation_count": 203,
            "individual_count": null,
            "first_year": 1985,
            "last_year": 2025
        },
        {
            "species_code": "2010",
            "common_name": "Lamproie indéterminée (genre Lampetra)",
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            "observation_count": 171,
            "individual_count": null,
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            "last_year": 2025
        },
        {
            "species_code": "2012",
            "common_name": "Lamproie de Planer",
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            "observation_count": 118,
            "individual_count": null,
            "first_year": 1985,
            "last_year": 2025
        },
        {
            "species_code": "2084",
            "common_name": "Cyprinidé indéterminé (Cyprinidae)",
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            "observation_count": 30,
            "individual_count": null,
            "first_year": 2014,
            "last_year": 2014
        },
        {
            "species_code": "2011",
            "common_name": "Lamproie de rivière",
            "scientific_name": "Lampetra fluviatilis",
            "operation_count": 1,
            "observation_count": 5,
            "individual_count": null,
            "first_year": 2020,
            "last_year": 2020
        },
        {
            "species_code": "2133",
            "common_name": "Gardon",
            "scientific_name": "Rutilus rutilus",
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            "observation_count": 3,
            "individual_count": null,
            "first_year": 2018,
            "last_year": 2024
        },
        {
            "species_code": "2009",
            "common_name": "Lamproie indéterminée (famille Petromyzontidae)",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2025,
            "last_year": 2025
        },
        {
            "species_code": "2129",
            "common_name": "Pseudorasbora",
            "scientific_name": "Pseudorasbora parva",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2025,
            "last_year": 2025
        }
    ]
}