Bought this guy a month ago. He was eating nori like crazy but nothing else no matter how i tried. Once he started to get weak my hippo sensed weakness and started pounding on him. Found him stuck to a powerhead when i got in from work a week ago. Lasted about 3 weeks. Sucks. I have only lost about 4 fish total in my 25 years of doing this and i sensed something else was gooing on with him. I think you guys might be on to something with this cyanide thing.