Thanks, guys! Yup, he's really young still... but he's the biggest out of the spawn, so the others aren't quite as developed as he is. I'm able to definitely sex two others though; another male, and a female. And he's about an inch long right now.
really nice.. i dont know how you manage to keep the bottom so clean, my bottom of tank is always so dirty but i dont use a filter and alot of my plants seem to die after a couple weeks