Hello everyone

I'm just returning to livebearers after several years' hiatus, and I'd like to gather the collective opinion of FNZAS on breeder boxes... There are those square netted ones, and ones like: http://image.dhgate.com/albu_262909032_00-1.0x0/new-clear-plastic-frame-fry-hatchery-fish.jpg (which is what I've got):

I've just put one of my very pregnant swordtails (below) in a breeder box with some weed. But now I'm questioning myself.

As you can see, she's very pregnant, boxy, and you can see the eyes of the fry inside her (at least that's what I've come to believe those things are).

I used to make large v traps in large tanks so I could put a lot of gravid females in when required and leave them for a while after birthing to condition up again.

I've decided, for the moment, to take her out of the breeder box, and instead put my male in there. She looked kinda stressed, and this way he won't be able to chase her endlessly round the tank...

Is this a good idea?

I only have 2 females and 1 male in this tank.

I always found females stressed out in these boxes. Much better to provide plenty of plant cover so fry can hide.

Putting the male in there is fine but he can't stay in there too long.

How come?

The heavily pregnant one has become quite 'aggressive', even towards the (slightly less) pregnant female.

Because he won't like being trapped in there, unable to reach the females he can see but can't get to. These fish also like to swim forward, not hover in place.