These are relatively easy to care for- I keep two of them in a Fluval Edge 6 gallon, along with a few abn plecos and about a hundred cherry shrimps. The best advice for these is to only keep them in an established tank that has enough size to generate food for them. In a smaller tank you WILL have to feed them or they will starve. I am sorry to say that I had this happen to me, and I don't want it to happen to anyone else, because it sucks. I feed mine Spectrum Small Fish formula that has been ground to powder. These shrimps are very interesting to watch, long-lived (at least for shrimps- 5+ years is not uncommon for these) and totally docile towards other tank-mates. They are one of my favorites for a community tank.
I even have duckweed in my water bong!