I'm not sure if I should be posting in this forum; if not, please advise. I purchased a bangaii cardinal fish over the weekend and he or she is in my quarantine tank, and eating very well. Poor lil fella, though, just keeps staring at his reflection all day. Should I get another one? The LFS still has 2 from the same group mine came from. Any way to tell male from female? I've kept PJs for several years and late in life they started to fight, so I had to split them up.