funny... just went by union square petco this morning and bought some of this moss, not even knowing about this thread. yes, the moss is not common java moss. very interesting nice, and very large frowns. 1.99 for a large bag of it. nuts, and wonderful.
would like to know what kind of moss it is as well, lets work on that
I am in no way a moss specialist, it doesn't look like Vesicularia or Taxiphyllum, but it does look a bit like a really really small miniature version of my Fontinalis antipyretica ssp. So I agree with carpenoctem, could be Fontinalis species, but propably not F. antipyretica.