Sorry to hear about your melanura, that's really unfortunate. I worked in a couple different LFS's for years when I was younger, one of which was great and kept the fish in excellent conditions, the other one not so much. Sometimes, what it comes down to is that the LFS just doesn't have the proper space to house large cichlids. Some are better than others, but all in all, the fate of American cichlids in LFS's and in the hands of 90% of their keepers (who aren't necessarily hobbyists, and don't get educated) can be pretty grim.