Monomaniac fr

I thought I lost it forever. But when I cleaned my 60L tank filter yesterday (after many many months…), here is what I discovered in a sponge:
Please help me correctly identify it. I bought it as Fissidens adianthoides. Many thanks folks

For my PRLs. Benibachi soil:
Slow grower Fissidens splachnobryoides, definitely my favorite moss:

No offense, I was just talking about this mosura

Another interesting new stuff that I recently discovered:
36 hours later:
 

Thanks to Fabrice, I discovered these very interesting new (for me) kinds of food that we brought back from the last Hannover Shrimp show. They are supposed to be « nature pure » and « without any additives ». It sounds good enough to give them a try.
So far, the results seem pretty convincing:
K14:
PRL:
Indeed, I already tried 4 different [...]