ah I see..sorry for the missreading! m(_ _)m
I have interest in growing the moss..XD but my aquarium's decorations haven't fixed yet..still need changes..
anyway..got my Betta...named him Hiki~ maybe he still around 3 months old...
Seems like he isn't really comfortable with Bigger Marimos..
He doesn't want to swim next to the SuperGiants
and yet he Loves to swim around next to filter pipe even he got pushed away by the air flow, and (keep swimming closer to the filter pipe again after that)

try to photo him next to the marimo..but seems he realized when I want to take photos of him =.=" He swam to the back of the aquarium after tat..
*CORRECTION*
he seems try to move closer the the Super Giants..then not so long he moved away..
IDK is it maybe my lamp is too strong for him...or he doesn't comfortable with the area..he loves to stay in the edge of the aquarium next to the filter pipe...
Nice~is it a halfmoon or delta?...i think its a halfmoon~where did u got it & how much?~