ninilie

Im annoyed. Last night i seperated about 10 fry into my divided 10g. This morning i look at them and they are all on the same side . I have about 50 more to sex still. It looked the divider was tight. I guess these guys are still to small. I really want them to focus on growing and not start to mate too early.

FishKing

I would not worry much. Guppies do not become sexually mature until they are about 1 and a half to 2 months old.

COBettaCouple

Watch for any signs of color starting to come in and watch for the anal fins developing into gonopodiums.

ninilie

Ok thanks. Hopefully buy the time they are sexually active they will be to big to slip past the divider. At least i got them out of the croweded fry tank.

COBettaCouple

They'll be too big to fit through the holes. Be sure they can't slip through on the sides - they're clever little ones and we had this one male that somehow kept getting over to the female side.