Please cite this data as follows, and pay attention to the rights documented in the rights.txt: 
Please respect the rights declared for each dataset in the download: 
GEO-Tag der Artenvielfalt: Mangfalltal
Field Museum: Field Museum of Natural History (Zoology) Fish Collection
UK National Biodiversity Network: Record, the Biodiversity Information System for Cheshire, Halton, Warrington and the Wirral - RECORD unverified freshwater fish data up to current day
UK National Biodiversity Network: Biological Records Centre - Database for the Atlas of Freshwater Fishes
Institute of Nature Conservation, Polish Academy of Sciences: Alien Species in Poland - Animals
iNaturalist.org: iNaturalist research-grade observations
UK National Biodiversity Network: Rotherham Biological Records Centre - Rotherham Biological Records Centre - Non-sensitive Records from all taxonomic groups
University of Kansas Biodiversity Institute Ichthyology Collection
Cornell University Museum of Vertebrates: CUMV Fish Collection (Arctos)
New Mexico Biodiversity Collections Consortium internet accessible database, provided through DiGIR protocol.
National Museum of Nature and Science, Japan: Fish collection of the Museum of Nature and Human Activities, Hyogo
UNSM
National Museum of Natural History Luxembourg Recorder database
Sumner, F. B., R. C. Osborn, L. J. Cole, and B. M. Davis. A biological survey of the waters of Woods Hole and vicinity. Bulletin of the U.S. Bureau of Fisheries. 1911. 31: 1-860.
Atlas of Danish Fishes, freshwater fishes.
Sam Noble Oklahoma Museum of Natural History: Fish Specimens
North Carolina State Museum of Natural Sciences: North Carolina State Museum of Natural Sciences Fishes Collection
Atlantic Reference Centre Museum of Canadian Atlantic Organisms - Invertebrates and Fishes Data
Royal Dutch Angling Association: Royal Dutch Angling Association (SVN) - Piscaria
MHP Fish Collection
Museum of Biological Diversity, The Ohio State University: Ohio State University Fish Division (OSUM)
UK National Biodiversity Network: Environment Agency - Environment Agency Non-native Species records v1
National Museum of Nature and Science, Japan: Gunma Museum of Natural History, Fish Specimen
SPN - Service du Patrimoine naturel, Muséum national d'Histoire naturelle, Paris: Inventaire National du Patrimoine Naturel : Atlas des poissons d'eau douce de France métropolitaine (2011)
GBIF-Sweden: Swedish Board of Fisheries (Fiskeriverket) - Swedish Electrofishing Registry
SPN - Service du Patrimoine naturel, Muséum national d'Histoire naturelle, Paris: Inventaire National du Patrimoine Naturel : Poissons d'eau douce de France
naturgucker.de: naturgucker
GEO-Tag der Artenvielfalt: NSG Karwendel
Natural History Museum of Los Angeles County: LACM Vertebrate Collection
Swedish Museum of Natural History: NRM-Fishes
Norwegian Institute for Nature Research: NINA Vanndata fisk
ArtDatabanken: Artdata
MNHN - Museum national d'Histoire naturelle: Fish collections of Museum national d'Histoire naturelle
Canadian Museum of Nature, Fish Collection
SAIAB
USGS/NAS database. 2012. Gainesville, FL. http://nas.er.usgs.gov., USGS/NAS database
Tulane University Museum of Natural History: Tulane University Museum of Natural History
North Carolina Museum of Natural Sciences Fishes Collection
UK National Biodiversity Network: Pond Conservation - National Pond Monitoring Network collated pond survey data for Great Britain 1972 to 2007
Centre d'estudis de la neu i de la muntanya d'Andorra (CENMA), Institut d'Estudis Andorrans: Vertebrats d'Andorra
National Museum of Natural History, Smithsonian Institution: NMNH occurrence DwC-A
Canadian Museum of Nature - Fish Collection
Australian Museum: Australian Museum provider for OZCAM
Doadrio, I. (ed.) 2001. Atlas y Libro Rojo de los Peces Continentales de España. Dirección General de Conservación de la Naturaleza-Consejo Superior de Investigaciones Científicas. Madrid, 374 pp.
Yale Peabody Museum, (c) 2009. Specimen data records available through distributed digital resources.
Oregon State Ichthyology Collection
GBIF-Sweden: Limnodata
Research Institute for Nature and Forest (INBO): VIS - Fishes in estuarine habitats in Flanders, Belgium
Diveboard - Scuba diving citizen science observations. Online at http://www.diveboard.com and http://ipt.diveboard.com/resource.do?r=diveboard-occurrences., http://www.diveboard.com
SPN - Service du Patrimoine naturel, Muséum national d'Histoire naturelle, Paris: Inventaire National du Patrimoine Naturel (ONEMA) : Données ONEMA sur les poissons et écrevisses d'eau douce.
University of Alabama Ichthyological Collection (UAIC), UAIC
University of Alberta Museums: University of Alberta Museums, Ichthyology Collection
Museum of Comparative Zoology, Harvard University: Museum of Comparative Zoology, Harvard University
FishBase: Fishbase
ROM Fish Collection
Contreras Balderas, S. 2008. Especies de peces introducidas en aguas continentales de México. Catálogo y manuscrito. Bases de datos SNIB2010-CONABIO Proyecto No. AE002. México, D.F.
GBIF-Sweden: Swedish Board of Fisheries (Fiskeriverket) - National Register of Survey testfishing