We would be grateful for some feedback/advice about post spawning behavior.\n\nFirst...an overview that I hope will suffice.\nWe purchased a five-acre property (2500 elevation near Grass Valley CA) in March 2015 with two koi ponds; a "big" pond and a "nursery" pond. Our water comes from a very good well. The "big" 5500+ gallon pond had 24+ koi ranging in size from 6" to 20". After much work, we converted the old filter system to a bead filter, a better UV light plus small waterfall at the far end of the pond to ensure proper circulation. The pond needed to be professionally cleaned, so we used that opportunity to re-home many of the 2015 fry and a good number of the larger fish. We moved the 2016 fry to the 500-gallon "nursery" waterfall pond. We could not live full time on the property until June 2016. And so, though we knew we had breeding fish, (due to the fry that showed up summer 2015 & summer 2016) we had not witnessed the fish spawning. We really don't want a lot of fry because they are really difficult to catch. Well, all of our fish are difficult to catch unless we drain the pond!\n\nWe know there has been spawning this week of May 1st because the pond is all stirred up and there have been eggs in the basket filter. The fish have not been coming to the surface to feed. Yesterday morning and evening I didn't even put food in because none of the fish came to their usual feeding spot.\n\nHere are my questions: Is this normal for the fish to stay down and not eat during spawning? How long is the spawning time? Do all the females release their eggs the same day or does it take several days? Should we be worried?