So, I think I may have killed my royal gramma. He was doing great until I fed him some old frozen squid. Also, I may have given him too big of bites. The other fish too, have slowed down with their appetites. My gramma died last night, but looked healthy. Very colorful. So, when it comes to feeding meat. Can I feed my fish raw table shrimp? I'll also get new squid. I just bought some new krill, but my fish don't like it. I do have more old frozen myssis shrimp. Should I through it out?