[Apon]

I got 4 to begin with 2 months, one was killed right away. I have noticed 2 have paired off, but I can't tell which one is male or female. The third one has been chased away and only comes out to eat, but they don't seem to be fighting with it? I have a 120 tank, and just yesterday I saw 3 babies in my overflow......not sure how to get them out. They are about 1 cm big? Do I have to feed them anything special? Don't know how long they have been there? Any thoughts?