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All organisms have temperature preferences.  Stonefly nymphs and salmon survive best in cooler water.

Dragonfly nymphs and carp prefer warmer conditions.

Even human beings prefer a certain range of water temperature for swimming or bathing.  Most of us would not enjoy swimming in either icy or hot water.

Perhaps, you might be able to guess whether bass or trout prefer warmer water conditions.

Which of these fish live in warmer waters?

Bass                                                   Trout

Largemouth bass Brook trout

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