I have two 2 juvenile carps and 2 adult carps.Its been more than 2 months they are all happy and disease free.I try to keep the water in good condition. Feed them twice with taiyo bloodworms and Optimum pellets. Only thing what bothers me is they dont retain their color as they should have . I dont know may be i m obsessing or my illusion. They are distant koi relatives . LFS call them Melina Carp(there no such name i have googled) but resemble orfe fish(U can google).