Currently have 12 Platys, 3 Oto s , 3 Sterbai Corys. Six of the Platys are the solid orange kind with the turned up noses (all male) & then I added 6 Wagtail (mostly female). The little orange ones chase the females relentlessly, I m guessing cuz they re producing babies? I now have 4 surviving babies (OMG, they re soooo cute). Thinking I ll return the original 6 orange guys . Want a peaceful tank, I have a very stressful job & want to enjoy my tank & I don t like to watch the Wagtails so stressed out. Also plan to get 5 more Sterbai. Also wanted 1 or 2 center peice fish, was going to get 2 Koi Angelfish but my friend, who used to work at a pet store, said they re a type of Cichlids so they ll ve aggressive . Any thoughts? Ideas for a peaceful type of fish instead of the AF?? Please help......