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The ability to adapt to cold temperatures at the edge of the sunfish range varies widely within the family. [[Largemouth bass]] (''Micropterus salmoides'') have no cold acclimation ability as seen through the strict maintenance of the northern boundary of the species range.<ref name=":5" /> Other species like [[smallmouth bass]] (''Micropterus dolomieu'') and [[green sunfish]] (''Lepomis cyanellus'') have exhibited signs of minor cold-water adaptation and have even experienced slight range expansions into colder habitats.<ref name=":5">{{Cite journal|last1=Tschantz|first1=Deidra R.|last2=Crockett|first2=Elizabeth L.|last3=Niewiarowski|first3=Peter H.|last4=Londraville|first4=Richard L.|date=2002-11-01|title=Cold Acclimation Strategy Is Highly Variable among the Sunfishes (Centrarchidae)|journal=Physiological and Biochemical Zoology|volume=75|issue=6|pages=544–556|doi=10.1086/344492|pmid=12601611|s2cid=36858254|issn=1522-2152}}</ref>
 
If air temperatures continue to rise in the next 50 to 100 years as predicted,( this is speculation) <ref>IPCC, 2014: Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Core Writing Team, R.K. Pachauri and L.A. Meyer (eds.)]. IPCC, Geneva, Switzerland, 151 pp. https://www.ipcc.ch/report/ar5/</ref> warmwater species like centrarchids will likely experience range expansions northward and see an overall increase in occupiable habitat.<ref>{{Cite journal|last1=COMTE|first1=LISE|last2=BUISSON|first2=LAËTITIA|last3=DAUFRESNE|first3=MARTIN|last4=GRENOUILLET|first4=GAËL|date=2013-04-01|title=Climate-induced changes in the distribution of freshwater fish: observed and predicted trends|journal=Freshwater Biology|language=en|volume=58|issue=4|pages=625–639|doi=10.1111/fwb.12081|issn=1365-2427|url=https://hal.archives-ouvertes.fr/hal-00992708/file/Comte_11129.pdf|doi-access=free}}</ref><ref name=":32"/> This range expansion can have grave consequences for other freshwater fishes however, as many centrarchids are dominant top predators which can severely alter the community structure of non-native ecosystems and drive the extinction of other native predators.<ref>{{Cite book|title=Centrarchid Fishes|last1=Near|first1=T. J.|last2=Koppelman|first2=J. B.|publisher=Wiley-Blackwell|pages=1–38|language=en|doi=10.1002/9781444316032.ch1|chapter = Species Diversity, Phylogeny and Phylogeography of Centrarchidae|year = 2009|isbn = 9781444316032}}</ref>
The Earth's climate is always in a state of change, natural cycles and human-caused climate change can both contribute to the aforementioned range expansion, which can be incredibly disastrous for native fish species.
 
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