Java moss has gained popularity with the aquarium hobbyist however it is difficult to find in a pet store. It’s surprising because Java moss requires no special lighting, looks amazing and grows in a variety of water conditions. Shrimp (another recent favorite with hobbyist) and fry love to hide and eat algae off the moss. It can also be used to make a moss wall instead of a backdrop and it improves your overall water quality.
So, I recently purchased some, not from a pet store but from ebay: http://www.ebay.com/sch/i.html?_odkw=java+moss&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313&_nkw=java+moss&_sacat=0
Surprisingly it can be shipped without dying but from the ebayer’s feedback it looks good, can’t wait to put some up!