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Cold Water fish for Fry control


Goosedub
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Good morning,

I have endler fry and for now and wanting more. There aren’t too many now, but I have heard about livebearers quickly outgrowing their tanks. They are in a 20L with a single BN Pleco. I am not running a heater on the tank and I don’t want to have to run a heater if I can get away with it. Are there any fish that can help control the fry population but also don’t require a heater? I can’t think of any. I have thought of Apistos, Angels Bettas. All require heaters. Any help is appreciated.

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1 hour ago, Patrick_G said:

I really like the look of the Golden Panchax Killifish. Others to consider: Paradise Fish or some larger live bearing fish. Maybe Platties or Guppies would work, you could buy males only. 

That killifish is really pretty. Will it be a problem with my adult endlers? They aren’t very big.

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The livebearer idea has potential. With endlers, you have to make sure the adults won't fit in its mouth though. I think guppies would be too small to reliably eat the fry. Swordtails might be big enough to chomp the adults. I'd consider platies first and mollies second - just because platies are smaller. 

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Just now, Patrick_G said:

You’re right, the Golden Panchax has a huge mouth. It could definitely fit an adult Endler. I forgot how small they are. 
I’ll second @CalmedByFish’s recommendation for the Platies. I love the ones that look like Sanke Koi. 
 

AC7B6353-A827-40A8-8A57-33BA18A7E1ED.jpeg

I was thinking along th lines of Variatus platies. Those ones are really attractive

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