I bought some of those a while back. I lost some and then bought some at a different LFS that were just sold as spoted corys. I can't remember what the scientific name of those was but it was different. I think there are several species sold as spotted corys. That one store is the only one around here that ever had the melanistius so I'm not sure if that is what they really were or not. They looked identical to the ones I got from the other store which have fared much better. Maybe those are wild caught which would help explain why I lost all of the but one (may have lost him too as I added 5 more and then lost one which could have been the one remaining melanistius). They really are pretty fish though and much more active than my peppered corys.