{
    "river": {
        "name": "La Rance",
        "course_code": "O82-0400",
        "topage_code": null
    },
    "dataset": "species",
    "extracted_at": "2026-11-09T12:25:45+01:00",
    "source_note": "RivièreScope agrège des données publiques ; consultez /sources/ pour les producteurs et licences.",
    "data": [
        {
            "species_code": "2221",
            "common_name": "Truite de riviere",
            "scientific_name": "Salmo trutta",
            "operation_count": 22,
            "observation_count": 2137,
            "individual_count": null,
            "first_year": 1994,
            "last_year": 2024
        },
        {
            "species_code": "2125",
            "common_name": "Vairon",
            "scientific_name": "Phoxinus phoxinus",
            "operation_count": 22,
            "observation_count": 1588,
            "individual_count": null,
            "first_year": 1994,
            "last_year": 2024
        },
        {
            "species_code": "2012",
            "common_name": "Lamproie de Planer",
            "scientific_name": "Lampetra planeri",
            "operation_count": 22,
            "observation_count": 575,
            "individual_count": null,
            "first_year": 1994,
            "last_year": 2024
        },
        {
            "species_code": "2071",
            "common_name": "Loche franche",
            "scientific_name": "Barbatula barbatula",
            "operation_count": 20,
            "observation_count": 241,
            "individual_count": null,
            "first_year": 1995,
            "last_year": 2024
        },
        {
            "species_code": "2113",
            "common_name": "Goujon commun",
            "scientific_name": "Gobio gobio",
            "operation_count": 16,
            "observation_count": 231,
            "individual_count": null,
            "first_year": 1994,
            "last_year": 2016
        },
        {
            "species_code": "873",
            "common_name": "Ecrevisse signal",
            "scientific_name": "Pacifastacus leniusculus",
            "operation_count": 8,
            "observation_count": 211,
            "individual_count": null,
            "first_year": 2010,
            "last_year": 2024
        }
    ]
}