The article "Potential impacts of global climate change on freshwater fisheries" by Ashley D. Ficke, Christopher A. Myrick, and Lara J. Hansen discusses the potential effects of global climate change on freshwater fisheries. Despite uncertainties in various levels of analysis, recent and long-term changes in climate suggest that greenhouse gas emissions have altered mean annual temperatures, precipitation patterns, and weather patterns. Modeling efforts predict a 1–7°C increase in global temperatures, regional changes in precipitation, and the possibility of sudden irreversible regime shifts. These changes are likely to affect freshwater systems by increasing water temperatures, reducing dissolved oxygen levels, and enhancing pollutant toxicity. In lotic systems, altered hydrologic regimes and increased groundwater temperatures could degrade fish habitat quality. In lentic systems, eutrophication may be exacerbated, and stratification will likely become more pronounced, altering food webs and habitat availability. Fish physiology, which is closely linked to temperature, will be affected, leading to changes in fish life histories and community dynamics. Range shifts will occur at the species level, adding novel biotic pressures to aquatic communities. Genetic changes may also occur, particularly for species unable to migrate or acclimate. Artisanal, commercial, and recreational fisheries worldwide depend on freshwater fishes, and impacts could affect food security in developing countries and cause economic losses in developed countries. Human responses to climate change, such as increased water diversion, will exacerbate these effects. The authors emphasize the need for proactive management strategies to sustain freshwater fisheries, as global climate change will continue even if greenhouse gas emissions decrease or cease.The article "Potential impacts of global climate change on freshwater fisheries" by Ashley D. Ficke, Christopher A. Myrick, and Lara J. Hansen discusses the potential effects of global climate change on freshwater fisheries. Despite uncertainties in various levels of analysis, recent and long-term changes in climate suggest that greenhouse gas emissions have altered mean annual temperatures, precipitation patterns, and weather patterns. Modeling efforts predict a 1–7°C increase in global temperatures, regional changes in precipitation, and the possibility of sudden irreversible regime shifts. These changes are likely to affect freshwater systems by increasing water temperatures, reducing dissolved oxygen levels, and enhancing pollutant toxicity. In lotic systems, altered hydrologic regimes and increased groundwater temperatures could degrade fish habitat quality. In lentic systems, eutrophication may be exacerbated, and stratification will likely become more pronounced, altering food webs and habitat availability. Fish physiology, which is closely linked to temperature, will be affected, leading to changes in fish life histories and community dynamics. Range shifts will occur at the species level, adding novel biotic pressures to aquatic communities. Genetic changes may also occur, particularly for species unable to migrate or acclimate. Artisanal, commercial, and recreational fisheries worldwide depend on freshwater fishes, and impacts could affect food security in developing countries and cause economic losses in developed countries. Human responses to climate change, such as increased water diversion, will exacerbate these effects. The authors emphasize the need for proactive management strategies to sustain freshwater fisheries, as global climate change will continue even if greenhouse gas emissions decrease or cease.