{
    "river": {
        "name": "L'Osse",
        "course_code": "O68-0400",
        "topage_code": null
    },
    "dataset": "species",
    "extracted_at": "2026-09-22T01:56:20+02:00",
    "source_note": "RivièreScope agrège des données publiques ; consultez /sources/ pour les producteurs et licences.",
    "data": [
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            "observation_count": 1334,
            "individual_count": null,
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            "last_year": 2022
        },
        {
            "species_code": "31041",
            "common_name": "Chevaine",
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            "observation_count": 1135,
            "individual_count": null,
            "first_year": 1994,
            "last_year": 2025
        },
        {
            "species_code": "2125",
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            "observation_count": 850,
            "individual_count": null,
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            "last_year": 2022
        },
        {
            "species_code": "2112",
            "common_name": "Goujon indéterminé (Gobio)",
            "scientific_name": "Gobio sp.",
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            "observation_count": 493,
            "individual_count": null,
            "first_year": 2013,
            "last_year": 2025
        },
        {
            "species_code": "2071",
            "common_name": "Loche franche",
            "scientific_name": "Barbatula barbatula",
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            "observation_count": 462,
            "individual_count": null,
            "first_year": 1997,
            "last_year": 2025
        },
        {
            "species_code": "2133",
            "common_name": "Gardon",
            "scientific_name": "Rutilus rutilus",
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            "observation_count": 364,
            "individual_count": null,
            "first_year": 1994,
            "last_year": 2024
        },
        {
            "species_code": "2124",
            "common_name": "Vairon indéterminé (Phoxinus)",
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            "observation_count": 295,
            "individual_count": null,
            "first_year": 2013,
            "last_year": 2025
        },
        {
            "species_code": "2096",
            "common_name": "Barbeau fluviatile",
            "scientific_name": "Barbus barbus",
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            "observation_count": 143,
            "individual_count": null,
            "first_year": 1994,
            "last_year": 2018
        },
        {
            "species_code": "2193",
            "common_name": "Perche",
            "scientific_name": "Perca fluviatilis",
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            "observation_count": 106,
            "individual_count": null,
            "first_year": 1994,
            "last_year": 2020
        },
        {
            "species_code": "68137",
            "common_name": "Ecrevisse américaine",
            "scientific_name": "Faxonius limosus",
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            "observation_count": 98,
            "individual_count": null,
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            "last_year": 2024
        },
        {
            "species_code": "31337",
            "common_name": "Goujon de l’Adour",
            "scientific_name": "Gobio lozanoi",
            "operation_count": 3,
            "observation_count": 89,
            "individual_count": null,
            "first_year": 2014,
            "last_year": 2017
        },
        {
            "species_code": "2122",
            "common_name": "Vandoise",
            "scientific_name": "Leuciscus leuciscus",
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            "observation_count": 42,
            "individual_count": null,
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            "last_year": 2018
        },
        {
            "species_code": "2123",
            "common_name": "Vandoise rostrée",
            "scientific_name": "Leuciscus burdigalensis",
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            "observation_count": 38,
            "individual_count": null,
            "first_year": 2012,
            "last_year": 2024
        },
        {
            "species_code": "2028",
            "common_name": "Ecrevisse de Louisiane",
            "scientific_name": "Procambarus clarkii",
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            "observation_count": 29,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2025
        },
        {
            "species_code": "2090",
            "common_name": "Ablette",
            "scientific_name": "Alburnus alburnus",
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            "observation_count": 14,
            "individual_count": null,
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            "last_year": 2020
        },
        {
            "species_code": "2038",
            "common_name": "Anguille européenne",
            "scientific_name": "Anguilla anguilla",
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            "observation_count": 12,
            "individual_count": null,
            "first_year": 1997,
            "last_year": 2025
        },
        {
            "species_code": "2086",
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            "scientific_name": "Abramis brama",
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            "observation_count": 8,
            "individual_count": null,
            "first_year": 1994,
            "last_year": 2009
        },
        {
            "species_code": "31135",
            "common_name": "Toxostome",
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            "observation_count": 6,
            "individual_count": null,
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            "last_year": 2002
        },
        {
            "species_code": "2216",
            "common_name": "Truite arc-en-ciel",
            "scientific_name": "Oncorhynchus mykiss",
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            "observation_count": 6,
            "individual_count": null,
            "first_year": 1997,
            "last_year": 2014
        },
        {
            "species_code": "2135",
            "common_name": "Rotengle",
            "scientific_name": "Scardinius erythrophthalmus",
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            "observation_count": 5,
            "individual_count": null,
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            "last_year": 2002
        },
        {
            "species_code": "2137",
            "common_name": "Tanche",
            "scientific_name": "Tinca tinca",
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            "observation_count": 4,
            "individual_count": null,
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            "last_year": 2013
        },
        {
            "species_code": "2110",
            "common_name": "Carpe commune",
            "scientific_name": "Cyprinus carpio",
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            "observation_count": 3,
            "individual_count": null,
            "first_year": 2003,
            "last_year": 2006
        },
        {
            "species_code": "2109",
            "common_name": "Carpe miroir",
            "scientific_name": "Cyprinus carpio",
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            "observation_count": 2,
            "individual_count": null,
            "first_year": 1996,
            "last_year": 2001
        },
        {
            "species_code": "2102",
            "common_name": "Carassin commun",
            "scientific_name": "Carassius carassius",
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            "observation_count": 2,
            "individual_count": null,
            "first_year": 1995,
            "last_year": 2001
        },
        {
            "species_code": "2151",
            "common_name": "Brochet commun",
            "scientific_name": "Esox lucius",
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            "observation_count": 1,
            "individual_count": null,
            "first_year": 2013,
            "last_year": 2013
        },
        {
            "species_code": "2053",
            "common_name": "Black bass à grande bouche",
            "scientific_name": "Micropterus salmoides",
            "operation_count": 1,
            "observation_count": 1,
            "individual_count": null,
            "first_year": 2000,
            "last_year": 2000
        }
    ]
}