Not really bud. I am not sure what happened there but they were in good shape when you saw them right? I know that since they were babies they are more fragile than adults but still your tank I thought had good params for them.
What are the params and temp you keep it again?
Also I do have about 4 or so left from the batch you got yours from that ate now getting a pretty good size if your interested. Also had another spawn about two weeks ago and have quite a few babies running around that will be ready to go in a month or so.