I have been feeding my fahaka krill. Recently i read online that krill can cause constipation. I backed down and started feeding apple snails, fiddler crabs, crayfish. I still feed krill because i need some kind of frozen food. He is not big enough yet to go to the store and buy shrimp. He is only 5 inches. i have with held food for about 5 days and he doesn't seem to get skinnier. So is he constipated? ( I did feed tonight so don't worry i'm not going to starve him.) Any insight would be helpful