u/Powerful_Aspect_1970

I want to know what healthy food from kitchen I can feed 3-4 inch koi for healthy growth and food that is save for them. I have a shredder to make vegetables and fruits into tiny bite size pieces for koi to eat but should I boil them first so it’s soft and mushy for them to eat and digest for 3-4 inch koi fish? Can I also boil protein (chicken, fish , lentils) and shred it for tiny bites for them? Is it safe to feed them this way? And for proper growth? They are indoors now in makeshift tub because raccoons will eat them outside so in a middle of fencing the yard.