well the 12 or so that survived from the 15 I bought seem to be liking the tank, had one molt in the tank yesterday, 3 more today..seem to be pretty even numbers of male to females as well with at least one female looking to holding eggs, two more have saddles and 2 of the smallest are already a nice dark red color. All the males (guessing here) are a dark pink color but still kind of clearish..hope that makes sense.
added a boiled oyster shell and some Xmas moss to the tank for more hiding places. There are also some tiny pond snails int he tank, those will be ok with baby shrimp yes? can't really see them being a issue.