{
    "river": {
        "name": "L'Esches",
        "course_code": "H2258000",
        "topage_code": null
    },
    "dataset": "species",
    "extracted_at": "2026-09-22T01:57:00+02:00",
    "source_note": "RivièreScope agrège des données publiques ; consultez /sources/ pour les producteurs et licences.",
    "data": [
        {
            "species_code": "2080",
            "common_name": "Chabot",
            "scientific_name": "Cottus gobio",
            "operation_count": 9,
            "observation_count": 1127,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2071",
            "common_name": "Loche franche",
            "scientific_name": "Barbatula barbatula",
            "operation_count": 9,
            "observation_count": 261,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2167",
            "common_name": "Epinochette",
            "scientific_name": "Pungitius pungitius",
            "operation_count": 9,
            "observation_count": 148,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2221",
            "common_name": "Truite de riviere",
            "scientific_name": "Salmo trutta",
            "operation_count": 8,
            "observation_count": 60,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2024
        },
        {
            "species_code": "2165",
            "common_name": "Epinoche",
            "scientific_name": "Gasterosteus aculeatus",
            "operation_count": 4,
            "observation_count": 35,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2022
        },
        {
            "species_code": "2010",
            "common_name": "Lamproie indéterminée (genre Lampetra)",
            "scientific_name": "Lampetra spp",
            "operation_count": 3,
            "observation_count": 12,
            "individual_count": null,
            "first_year": 2018,
            "last_year": 2024
        },
        {
            "species_code": "2012",
            "common_name": "Lamproie de Planer",
            "scientific_name": "Lampetra planeri",
            "operation_count": 4,
            "observation_count": 10,
            "individual_count": null,
            "first_year": 2012,
            "last_year": 2022
        },
        {
            "species_code": "2216",
            "common_name": "Truite arc-en-ciel",
            "scientific_name": "Oncorhynchus mykiss",
            "operation_count": 2,
            "observation_count": 3,
            "individual_count": null,
            "first_year": 2008,
            "last_year": 2012
        },
        {
            "species_code": "68137",
            "common_name": "Ecrevisse américaine",
            "scientific_name": "Faxonius limosus",
            "operation_count": 3,
            "observation_count": 3,
            "individual_count": null,
            "first_year": 2012,
            "last_year": 2022
        },
        {
            "species_code": "2193",
            "common_name": "Perche",
            "scientific_name": "Perca fluviatilis",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2012,
            "last_year": 2012
        }
    ]
}