there are a few varieties of java fern. regular,narrow leaf and windelov. any of these will work. the moss family is pretty big. christmas,willow,java moss,singapopre,taiwan,and flame moss all should work. and the crypts...wendtii,willisi,becketti,lutea,petchii,af finis. and a bunch more. remember that any plants you may get can go through an acclimation period. they may look like they are dying. especially the crypts,they may get crypt melt. they will seem totally dead. then they will grow again.