aggressive female molly

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aggressive female molly

Postby christine » Sun Sep 02, 2007 10:50 am

I am probably being very naive but I am concerned about the behaviour of my daughters female dalmation molly. We have a pair of dalmation mollies and a pair of sunset platys in a 53l tank purcahsed 1 week ago. We set the tank up over the previous week and on the evening we purchased the fish we found 6 fry (mollies,2 of which were dead). During this week 2 more have disappeared. The remaining 2 seem very happy. However, the female molly has started behaving aggressively towards the malemolly and e is becoming withdrawn and hiding in the weed (can't blame him really). Should we remove the female to the breeding net we have just purchased? Or will this behaviour stop naturally?
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Postby Wolfgirl » Sun Sep 02, 2007 3:36 pm

Welcome. :)

Firstly, livebearers eat their own young, so that's likely where your missing fry have gone. :) Part of the problem is that your tank is cycling, which causes stress to your fish. Here is some info about that:
Nitrogen Cycle

I'm not an expert on livebearer behaviour by any means. I would suggest trying to rearrange the decor, if possible, to help ease the aggression issue. If that does not work, I would rehome the female. You are going to have a ton of fry as it is. :)

I would not recommend using the breeding trap/net, as they tend to stress out the females.
Don't let your mind wander. It's too small to be let out on its own.
~John Wagner
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