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Discussion Starter · #1 ·
hi guys, i have a 2 rapheal cats and a pleco in my 55 with a bunch of goldfish. since the goldfish are coldwater, i was gonna just stop using the thermometers to save on the electric bill. will the catfish be affected by this or not? i wasnt sure if they liked coldwater or not.
 

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joey'd is da man
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keep the heater!

some catfish are coldwater - but not the ones you described
 

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Tropical Fish is a catch-all phrase going back to the beginning of the hobby. My personal preference has always been exotic fish, since that phrase would include both cold and warm water species.
 

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Just have a look at planetcatfish.com and pay attention to the species locality. Most species come from (sub-)tropical regions (I think just the pleco and cory families combined [400+ species] surpass the number of coldwater catfish out there), but I agree there's a number of coldwater species as well...
 
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