Freshwater fish | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-27

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Freshwater_fish


00:00:44 1 Physiology
00:01:19 2 Migrating fish
00:02:24 3 Classification in the United States
00:02:52 3.1 Coldwater
00:03:29 3.2 Warmwater
00:04:03 3.3 Coolwater
00:04:35 4 Status
00:04:45 4.1 North America
00:05:22 5 See also



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SUMMARY
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Freshwater fish are those that spend some or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 0.05%. These environments differ from marine conditions in many ways, the most obvious being the difference in levels of salinity. To survive fresh water, the fish need a range of physiological adaptations.
41.24% of all known species of fish are found in fresh water. This is primarily due to the rapid speciation that the scattered habitats make possible. When dealing with ponds and lakes, one might use the same basic models of speciation as when studying island biogeography.