I purchased 6 neons after my tank cycled, and I had one die each day for five daysm until there was only one left. That one fish then survived another week, but I felt bad for him since he was all alone, and he still looked a little sickly, so I brought him to my LFS and they accepted him into the "Hospital" tank. I dont think I will try Neons again, since I have read, and have heard to my LFS, that about only 1 in 10 Neons survive. My water chemisty was and is fine, and they were slowly acclimated to the tank as they should be, so I dont think it was anything I did wrong. It's too bad, since these fish look really nice in a school.