Any chance it is Blepharostoma trichophyllum? hard to see the pic is a bit fuzzy but its like i see some resemblance, it's a native liverwort often sold as aquatic even Dennerle has it in it's collection i looked at it lately at the lfs, thats why i think i recognize it.. Didn't buy it because it was to expensive for the amount they offer. Still got my a tiny patch via an other route and is im my tank now with some other mossesThis is my current favorite native. Not a clue what it is but I believe it's a liverwort rather than a moss.
Definitely looks like a leafy liverwort, and possibly a Plagiochila sp. (<"P. asplenoides"> would be my guess, based upon the entire leaves).I'll pull a bit out and get a macro shot for you give me a minute and ill edit this post with some shots