Quote:
Originally Posted by COM
I'm assuming you've got one male and one female...
Generally with livebearers it is best to place about 3 females to every male. Most male livebearers want to mate constantly and with only one female she gets beaten up and often dies. It's possible that in your case is stressed from constant ...err... flirtation and that she is miscarrying her pregnancies.
The other considerations are that they generally don't like to "do it" right out in the open. Guppies have no shame, but platys generally like some plant cover or caves.
Finally, I think that your tanks with platys are a little smallish, and they may not be comfortable enough partake in breeding, especially with lots of other fish around.
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Yes, I have one male and one female but I have never seen them try to mate as in the male chasing the female around the tank non-stop...the male never seems bothered in the female and they dont swim around together either.
I can understand you saying the tank's a bit small but in my signature it might sound like i have a lot of fish in my 10g but not really, there is a big area/space that it empty. My tank still looks bare!