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beanbag

Birth control for CRS colony?

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beanbag

Hello folks,

If I get a batch of CRS for a small tank, is there a way for me to prevent the shrimp from having babies?  I want the colony to only get up to a certain size and then stop.  I don't want to deal with giving / selling shrimp, culling / killing them, etc.  Maybe after a while when shrimp die of old age or whatever, I will "turn on" breeding for a short time, then turn it off again.

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sdlTBfanUK

I don't think there is a contraceptive pill you can give shrimps so they will just do what comes naturally to them. I have this same problem and am at the stage of culling 2 per week (adult size) Taiwan Bees, started that a month ago., to make room for new shrimplets (I will review this occasionally). 

There will be ones without good colour/markings which makes it easier to decide which to get rid of and if you have a fish tank I am sure the fish will enjoy the treat, must be the equivalent of a Lobster to us, yummmm!

I will be watching this post with great interest as I have this same dilemma? Sorry I can't offer a better solution though.

Simon

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Zoidburg

Best thing is to have all males in one tank.

 

After that, incorrect water parameters/higher pH than what the shrimp were raised in... but it's not really recommended and there might still be some breeding.

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jayc
15 hours ago, beanbag said:

I will "turn on" breeding for a short time, then turn it off again.

Now I have heard it all ! :surprise:

 

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sdlTBfanUK

I had another thought last night!

Similar to Zoidburg, just have a couple of Females (1 would be better but if that dies you won't get any new babies until you get another female) and the rest males.

I 'believe' Caridina' reach sexual maturity at about 6 months (double the cherry time) so you should be able to tell males from females before they start breeding so you can remove the excess females fairly easily and restrict the flow of shrimplets. It will still mean disposing of some shrimps.

Otherwise, as Zoidburg says, just keep all Males or all Females but you will then have to restock every so often. IF you have all females they are a bit bigger so easier to see?

Of coarse the whole question is only relevant if all goes really well and you get the suitable parameters for them to breed, otherwise, as Zoidburg say it won't be a problem anyway.

Simon

 

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Zoidburg

Having all males and one female accidentally gets into the tank is much different than having all females and a male accidentally gets into the tank. If there's only one female, then only one could get knocked up. If it's one male, well... he could get all the girls preggo!

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