Visfauna - Juvenile and adult fishes in riparian habitats along the river Leie in Flanders, Belgium is a species occurrence dataset published by the Research Institute for Nature and Forest (INBO). The dataset contains over 470 fish occurrences sampled in 2009 in riparian habitats along the river Leie. The dataset includes 8 fish species. The data are collected to investigate the feasibility of a comprehensive study on the impact of the present ecological engineered river banks ("NTMB-oevers") on fish populations in the Leie. The dataset also includes the length and weight of the caught fishes. Issues with the dataset can be reported at https://github.com/LifeWatchINBO/data-publication/tree/master/datasets/visfauna-leie-occurrences To allow anyone to use this dataset, we have released the data to the public domain under a Creative Commons Zero waiver (http://creativecommons.org/publicdomain/zero/1.0/). We would appreciate it however if you read and follow these norms for data use (http://www.inbo.be/en/norms-for-data-use) and provide a link to the original dataset (https://doi.org/10.15468/2wrvbz) whenever possible. If you use these data for a scientific paper, please cite the dataset following the applicable citation norms and/or consider us for co-authorship. We are always interested to know how you have used or visualized the data, or to provide more information, so please contact us via the contact information provided in the metadata, opendata@inbo.be or https://twitter.com/LifeWatchINBO.