I just lost my guniea fowl puffer,my third one in four years.Is this a difficult fish to keep,it's the only one I have no luck with.I give them different food daily with vitamin supplements.Someone mentioned since alot of us try to keep our tanks alittle low on the salinity side this affects them,I don't know,I keep my tank at 17 to help keep away parasites.Has anyone else ran into this problem with puffers?