well I think is was a number of issues. first let me say that I have previously kept discus and always did the drop and plop with great results. The same with angels, hatchets, corys etc. I had a LFS order them for me and they kept them in the bag until I picked them up..who knows how long they were actually in the bag. They were small, under .5 inches and I actually suspect several were dead when I got them. None were fat and round like I would want, ideally. I suspect the LFS in their attempt to do the right thing added water to the bag and O2. As of this morning I have one male swimming around biting the eyes off snails, the rest have perished, I removed 3 yesterday and have 4 more corpses to remove this morning, the rest are def. not in the tank. I assume they became food for snails and shrimp. 44.00 for 1 puffer. No more LFS for me!