Cold water species for tropical tanks

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MultipleTankSyndrome

Giant Snakehead
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Sep 25, 2021
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Loachaholica
List cold water fish that are also suitable for some tropical tanks here.

One example off the top of my head would be the weather loach. Although it does just fine in unheated tanks, its recommended temperature range goes up to 25 degrees and it can therefore be kept in tropical tanks of 25 degrees or cooler: https://forums.loaches.com/viewtopic.php?f=1&t=48337
 
Meant to put this in but the edit function timed out: I would advise some care when it comes to putting weather loaches in tropical tanks. As Bas Pels points out in the Loaches Online link, where the weather loaches came from is important to their temperature needs.

The ones at my local aquarium store came from Florida commercial farms (like I said in the link). These are located in southern Florida, which nicely matches the higher end of recommended temperatures for weather loaches (such as Miami's annual 25.2 degree mean). Consequently, I feel reasonably confident that the ones I get in the future will do well at that temperature.

However, if the weather loaches available at one's local aquarium store are sourced from the aquaculture farms in South Korea and Japan, it would probably be a better idea to keep them in a cold water setup. Seeing as how that's the temperature they've been raised at.
 
I've kept and am keeping some species of Lepomis in a mixed community that is kept around 80 degrees. I am also keeping an Ameiurus catfish in this tank as well as creek chubs. they were initially in an unheated tank but i turned the heater on to prep the tank to be used as a QT tank. I heated before moving the fish as i was setting up another tank for them at the same time but they did really well in the warmth so i just moved them into an already warm tank.

may not be what youre looking for.

there are also fish from Uruguay that have seasonal differences. some species of cichlids have very large ranges in temps.
 
CrazyPhishMan said:
I've kept and am keeping some species of Lepomis in a mixed community that is kept around 80 degrees. I am also keeping an Ameiurus catfish in this tank as well as creek chubs. they were initially in an unheated tank but i turned the heater on to prep the tank to be used as a QT tank. I heated before moving the fish as i was setting up another tank for them at the same time but they did really well in the warmth so i just moved them into an already warm tank.

may not be what youre looking for.

there are also fish from Uruguay that have seasonal differences. some species of cichlids have very large ranges in temps.
Click to expand...

No, those are actually a good example of what I mean. Doesn't surprise me they can do well in tropical tanks, since they are in tropical South Florida.

I'll need to look into those cichlids.
 
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MultipleTankSyndrome said:
Meant to put this in but the edit function timed out: I would advise some care when it comes to putting weather loaches in tropical tanks. As Bas Pels points out in the Loaches Online link, where the weather loaches came from is important to their temperature needs.

The ones at my local aquarium store came from Florida commercial farms (like I said in the link). These are located in southern Florida, which nicely matches the higher end of recommended temperatures for weather loaches (such as Miami's annual 25.2 degree mean). Consequently, I feel reasonably confident that the ones I get in the future will do well at that temperature.

However, if the weather loaches available at one's local aquarium store are sourced from the aquaculture farms in South Korea and Japan, it would probably be a better idea to keep them in a cold water setup. Seeing as how that's the temperature they've been raised at.
Click to expand...
I think that stone loach is much better than weather loach.Smaller,much more active and simillar fish.But it is coldwater fish for Europe...I have it in unheated tank.It is interesting that this fish can also survive in tropical tank.

242592605_4596903647040799_4864412418074464792_n stone l... (2).jpg
 
Certainly better for those who don't have the tank size to house weather loaches. But I have never seen them for sale before.
 
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Logperch is another one! and given their size and behavoir you may like them, very loach like
 
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