3 days ago I bought home 2 iridescent sharks. One 12" and one 10". These guys have not eaten anything. I know it would be common for newly introduced fish to not eat due to stress of new surroundings but at what point do I say something is wrong? Water quality is great, right on the mark it needs to be at for them. I've tried pellets and wafers but their not interested. Sometimes they attempt to see what I dropped but most times they couldn't care less. I'm also not sure how long I should leave the uneaten food in the tank before I should clean it up? Thank for your help-Amber