Have you ever thought of hand stripping the female and male (no scale damage), it will save the fish from damage and you can control when and where the eggs hatch. Just a thought?Yeah my koi and orfes are just starting to show signs of spawning. Can get noisy out there with all the splashing, then have to check to see if anyone is getting damaged. My one large (dragon scaled koi) seems to always have a few big scales hanging off him afterwards.