FjordFish

FjordFish FjordFish is an underwater imagery dataset (3002 images, 6350 annotated objects) across 27 classes (table 1) designed for training object detection models to detect and classify underwater marine fauna. The dataset focuses on North Atlantic coastal fish species inhabitating the Norwegian and Swedish coasts. Images were collected from videos taken during baited and unbaited remote underwater video surveys along the Swedish and Norwegian coasts. Images of coastal cod were also collected from a semi-natural mesocosm at the Institute of Marine Research Flødevigen research station. All images are fully framed to include diverse backgrounds and species assmeblages. Labels are provided in the YOLO format for YOLOv8 and newer, but can be converted to other formats. Data managers: David Poling - University of Agder, Norway - [e-mail] Tonje Knutsen Sørdalen - Institute of Marine Research, Norway - [e-mail] If using this dataset for research, please cite: Poling, J. D., Sørdalen, T. K., Halvorsen, K., Thormar, J., Perry, D., & Larsen, T. (2025). FjordFish [Data set]. Zenodo. https://doi.org/10.5281/zenodo.17496689 Files: FjordFish.zip: images: 6350 images with numerical naming e.g. "1.jpg", "50.jpg" labels: label files in YOLO .txt format with naming identical to their associated image e.g. "1.txt", "50.txt" Table 1. Class ID Class Name Common Name Latin Name Total Annotations 0 ballan Ballan Wrasse Labrus bergylta 93 1 cuckoo_female Cuckoo Wrasse Female Labrus mixtus 47 2 cuckoo_male Cuckoo Wrasse Male Labrus mixtus 31 3 corkwing_female Corkwing Wrasse Female Symphodus melops 456 4 corkwing_male Corkwing Wrasse Male Symphodus melops 1215 5 goldsinny Goldsinny Wrasse Ctenolabrus rupestris 1433 6 rock_cook Rock Cook/Small-mouthed Wrasse Centrolabrus exoletus 152 7 labrids_unknown Labrids Unknown Labridae sp. 333 8 cod Atlantic Cod Gadus morhua 811 9 cod_yoy Cod Young of the Year Gadus morhua 181 10 haddock Haddock Melanogrammus aeglefinus 7 11 pollack Pollack Pollachius pollachius 149 12 poor_cod Poor Cod Trisopterus minutus 22 13 saithe Saithe Pollachius virens 39 14 whiting Whiting Merlangius merlangus 101 15 gadids_unknown Gadids Unknown Gadinae sp. 200 16 spiny_dogfish Spiny Dogfish Squalus acanthias 684 18 brown_crab Brown Crab Cancer pagurus 190 19 green_crab Green Crab Carcinus maenas 38 20 hermit Hermit Crab Paguridae sp. 15 21 lobster European Lobster Homarus Gammarus 1 22 decapods_unknown Decapods Unknown Decapoda sp. 5 23 ling Ling Molva molva 30 24 two_spot_goby Two Spot Goby Pomatoschistus flavescens 113 25 black_goby Black Goby Gobius niger 1 26 sand_goby Sand Goby Pomatoschistus minutus 3FjordFish数据集 FjordFish是一款专为训练目标检测模型以实现水下海洋生物检测与分类而构建的水下影像数据集，包含3002张图像与6350个标注对象，涵盖27个类别（见表1）。该数据集聚焦于栖息于挪威与瑞典海岸的北大西洋沿岸鱼类物种，图像源自瑞典和挪威海岸开展的诱饵式及非诱饵式远程水下视频调查所录制的视频片段。此外，沿岸大西洋鳕鱼的影像还采集自挪威海洋研究所Flødevigen研究站的半自然中型实验生态系统（mesocosm）。 所有图像均采用完整画幅拍摄，涵盖多样的背景环境与物种组合。标注采用适配YOLOv8及后续版本的YOLO（You Only Look Once）格式，也可转换为其他标注格式。 数据管理者： David Poling — 挪威阿格德大学 — [e-mail] Tonje Knutsen Sørdalen — 挪威海洋研究所 — [e-mail] 若将该数据集用于学术研究，请引用以下文献：Poling, J. D., Sørdalen, T. K., Halvorsen, K., Thormar, J., Perry, D., & Larsen, T. (2025). FjordFish [数据集]. Zenodo. https://doi.org/10.5281/zenodo.17496689 数据集文件： FjordFish.zip： - images文件夹：内含6350张采用数字命名的图像，例如"1.jpg"、"50.jpg" - labels文件夹：内含采用YOLO .txt格式的标注文件，文件名与对应的图像文件完全一致，例如"1.txt"、"50.txt" 表1. 类别ID 内部类名 通用俗名 学名 总标注数 0 ballan 巴兰隆头鱼 Labrus bergylta 93 1 cuckoo_female 雌云纹隆头鱼 Labrus mixtus 47 2 cuckoo_male 雄云纹隆头鱼 Labrus mixtus 31 3 corkwing_female 雌软鳍隆头鱼 Symphodus melops 456 4 corkwing_male 雄软鳍隆头鱼 Symphodus melops 1215 5 goldsinny 金隆头鱼 Ctenolabrus rupestris 1433 6 rock_cook 岩厨隆头鱼 Centrolabrus exoletus 152 7 labrids_unknown 未知隆头鱼科物种 Labridae sp. 333 8 cod 大西洋鳕鱼 Gadus morhua 811 9 cod_yoy 幼龄大西洋鳕鱼 Gadus morhua 181 10 haddock 黑线鳕 Melanogrammus aeglefinus 7 11 pollack 波拉克鳕 Pollachius pollachius 149 12 poor_cod 弱鳕 Trisopterus minutus 22 13 saithe 绿青鳕 Pollachius virens 39 14 whiting 白鳕 Merlangius merlangus 101 15 gadids_unknown 未知鳕亚科物种 Gadinae sp. 200 16 spiny_dogfish 白斑角鲨 Squalus acanthias 684 18 brown_crab 棕黄道蟹 Cancer pagurus 190 19 green_crab 欧洲绿蟹 Carcinus maenas 38 20 hermit 寄居蟹 Paguridae sp. 15 21 lobster 欧洲龙虾 Homarus Gammarus 1 22 decapods_unknown 未知十足目物种 Decapoda sp. 5 23 ling 长鳍鳕 Molva molva 30 24 two_spot_goby 双斑虾虎鱼 Pomatoschistus flavescens 113 25 black_goby 黑虾虎鱼 Gobius niger 1 26 sand_goby 沙虾虎鱼 Pomatoschistus minutus 3