I'm not really sure if I'm in the right place for this question, but I have a batch of young guppies and I'm having trouble figuring out if some of them are male or female. Now, before I get answers about HOW to tell them apart, I do know how to do that. I've already separated out the ones that are beyond a doubt female. But some of the ones that I thought were male aren't developing the longer gonopodium fin that they typically have. But, I can't see any eggs or gravid spot in them either. Could it be that these are just slower in developing & haven't quite developed the longer fin typical of the males? Any help would be greatly appreciated. Thanks!