I read up about them.. They seem to get pretty big, something said 150l tank.. But I suppose they over do it on sites like the one I was on, I believe she is a female due to the claws? (I am no shrimp expert) She's in an 11l just now, once I convince my parents I will get a 15/20gal for her Second hand though, they wont let me buy another new one. P.S. her name is Hannah-Belle, can anyone guess why?