Actually if it IS a C grade CRS, you may have a nice start to a C colony.
Normally I wouldn't advise downgrading any shrimp, but LOTS of people have been looking for them and can't find them anymore. Plus, you already have it so you really aren't doing anything wrong to breed it if it does turn out to be a C.
On the other hand, maybe someone will say it's a Tibee in which case all this is moot. LOL