Transcriptions of species occurrences from Huitfeldt-Kaas, H. (1918). Ferskvandsfiskenes utbredelse og indvandring i Norge : Med et tillæg om krebsen. Kristiania: Centraltrykkeriet (in Norwegian). The book describes in detail the recordings of freshwater fishes in Norway collected by the author from 1902 to 1918. Occurrences are in most cases referenced with lake (or in some cases, river/stream) names. Only occurrences registered in lakes are covered by this dataset. Please note that this should for the moment be regarded as a "live" dataset as the transcriptions are not completely finalized. The original recorded (historical) waterbody name is not always possible to logically match with contemporary gazetteers and are dependent upon local knowledge. Due to the nature of the data collection (questionnaires), the data can be regarded as fairly accurate in terms of species with high anthropogenic interest (e.g. salmonid fishes, pike etc.), but less so when it comes to fishes with little recreational or commercial interest (e.g minnows). The latter particularly holds for absence information. Due to the share size of the information, quality control is also dependent upon public scrutiny of the data. We release the data in the hope that this can help improve the quality of the dataset. Please reach out to the resource contact with issues, and include occurrenceID / locationID in the response. An online visualization of the dataset, including a link to issue reporting, is available as a shiny app downloadable from https://github.com/gbif-norway/data_huitfeldt-kaas_1918 or available online at https://shiny.vm.ntnu.no/users/andersfi/data_huitfeldt-kaas_1918/ (opens in chrome only).