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There are at least 14,350 freshwater fish species in the world living in lakes and rivers with a salinity level of less than 1.05%. In 2021, it was estimated that one-third of the global freshwater fish species are at risk of extinction. Therefore, conservation issues are crucial as is the decision whether to allow alien species to improve the production or instead concentrate on the well-being of the native species. At the same time, it is necessary to remember that as food, fish are an important human resource. In this book, we have chapters presenting the fish species from Africa, Europe, and North and South America. Therefore we have cold water, cool water, and warm water species. Stock assessments are critical in developing management plans for specific lakes and regions. Citizen sciences apps are a necessary tool for helping fisheries management biologists and researchers.
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DOI: 10.5772/intechopen.114646Editions