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I have a 20 gal tank that I was hoping to put 2 fish in while I wait for some platy fry to grow up. They are about 8 weeks and too young to know who will end up a male vs female. The new tank is cycled and I don't know how to really keep it cycled reliably while waiting on the platys to be reliably sexed. The female fry will stay where they are with their one bushynose pleko.

So, not sure how many males I will end up with....assuming could be 5-10, but I've had some ongoing deaths since I assume they are inbred--they're mother came pregnant..or I'm making mistakes as a beginner.

I was planning to put in one siamese algae eater this weekend (I have black beard algae starting in other tanks and am getting one for each), but was thinking I might want one other fish too. Just wasn't sure a single siamese algae eater could keep a tank well cycled or would want to be completely alone. His companion has to be something that would fine with, eventually, a group of male platys. I want no breeding and minimal risk for them not getting along.

I was wondering if a single dwarf gourami was doable? Other ideas?
 

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Hello km...

You can add some other hardy livebearing fish to maintain the cycle in the tank. Guppies and Swordtails are both good choices.

As for the SAE, it's peaceful. Make sure you don't get a similar species called a Flying Fox. They're aggressive.

M
 

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Discussion Starter #3
Hello km...

You can add some other hardy livebearing fish to maintain the cycle in the tank. Guppies and Swordtails are both good choices.

As for the SAE, it's peaceful. Make sure you don't get a similar species called a Flying Fox. They're aggressive.

M
I hope one can trust the fish stores on what is a Flying Fox vs a Siamese algae eater? I'm going to call tomorrow before I go to make sure they have them and I'll ask that specifically.

Regarding the other idea, can I ask a follow on question. I want to make sure no breeding. So, regarding swordtails, it would have to be male correct. I thought they could be aggressive as well...no?

Regarding guppies, I thought they like like to be in groups. So would have to be two...and would it have to be females?
 

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km...

You could have male livebearing fish. Mollies can be aggressive at times, but other livebearing male fish should be fine. Livebearing fish are social, but I've kept tanks in the past with males only with no problems. It's a good idea to heavily plant the surface. This allows hiding places for the fish. Livebearers are more comfortable in well planted tanks. Actually, if you want to slow the reproduction of these fish, you just need to keep them in cooler water. Cooler water slows the metabolism and the drive to reproduce. Otherwise, the fish are fine in cooler water.

M
 
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