And, since your's started out as a baby or possibly even an egg, it won't reproduce by itself. I'd send you some from my tank but they're still pretty small. If you contact msjinkzd she sells them, and gives them away with the purchase of plants I think.
Edit: another thought -- if it came as an egg, there may actually have been more eggs -- look for more little guys. How big is the one in your post pic?