I found it was not easy to keep the tanks divided by gender, because the females kept having more babies, and it was very hard to identify the males before they started in on making more fry. I ended up giving a bunch (maybe 50?) away, knowing they would be used as feeders. I now have about 10 males in one tank and a few females in another. The females are having more fry, but so far I think I'm on top of this.
I think it all depends on how old the males and females were when they were separated and how long since they've been separated. I'm not certain at what age/size they can start reproducing but I think I remember that the females can hold sperm for less than a year? I'm trying to prevent all this by getting them separated as soon as humanely possible! I wish they would cooperate...!
I vote to put on some Oprah or Dr. Phil and see which ones start watching the TV. Instant sexing![]()
I must be somewhere in the middle because I won't watch either!
I thought the gravid spot only was visible when they're ready to breed. I was wrong, hopefully!
IDEALLY, I will have one of my 10 gallons with a divider lengthwise for the adults, males on one side, female (lost one due to birthing complications??) on the other. And another 10 gallon set up the same way for the fry to mature, but with a heater to speed all this up. Then I will put adults females in one tank and adult males in the other, with no heaters, since I read that it makes them live longer in cooler water.
If I could only get the energy to make these dividers...