What is this "carpet" plant?

[aqua_tokyo]

Hi, my first post here.

I'd appreciate your help with identification of this plant. I picked it up at my local river, it's been in my aquarium for about 2 weeks and doing fine. My shrimps LOVE grazing/sitting on it.
In the river it was growing on stone, kind of immersed, but not too deep, so it needs light.
It is a moss-like plant, forming a mesh, attached to stone (reasonably strongly)
The picture is zoomed. The size of the side leaves is ~1-2mm, stems are ~10-15mm tall.
I looked around but hard to tell.
Thank you for hints~!

https://1drv.ms/i/s!AilHAoF6ajn5y1GgUqotjShfwzqj
https://1drv.ms/i/s!AilHAoF6ajn5y1BvDQxOJuiiPyz3

 

[dw1305]

Hi all,
It might be a <"leafy liverwort">, if it is it should have a a smaller "leaf" under the large "leaf" and the leaves in two rows.

cheers Darrel

 

[aqua_tokyo]

Thanks Darrel. Probably not that one though.. The leaves grow around the stem..

Can anyone suggest a good online aquarium plant encyclopedia?

 

[zozo]

Definitively looks more like a moss sp. maybe a Fontinalaceae sp. 🙂 The most widely known in the aquarium trade is the very common Fontinalis antipyretica. But that's likely not the one, hard to see but yours looks like have much more rounded leaf. Also fissidens sp. could be a posibility, this is a rather larger family...