Which “Christmas Moss” is this?

[NathanB]

I recently found a picture of a moss labelled as Christmas moss, but there are a few different species with this common name! I was wondering if anyone would be able to help me identify it as i’d love to grow it in my shrimp tanks

 

[Nont]

Probably the plant that sold as Vesicularia montagnei. The problem with mosses and other aquarium plants in general is that sellers usually use the made up names, especially for species that are hard to identify e.g. Bucephalandra, Cryptocoyne and Echinodorus.