Sounds like a lot of trouble. I'd wait. I agree you need to let your fish mature first. A male has a much larger lower jaw than a female.frozen-fire;775430; said:Yes you can... as mentioned in another thread, send a DNA sample to get it tested. It's pretty hard differentiating them as adults, so even more difficult as a 4 incher.
IMO, it doesn't matter the sex of your aros unless you're planning to breed, which not many can afford the space.