A useful grazing structure
Fine branching growth creates many small surfaces and spaces. Shrimp may pick through moss while searching for biofilm and particles.
A dense mat can hide uneaten food and make small shrimp difficult to see, so place it where you can still inspect the aquarium.
Keep moss healthy and suitable
Check plant identity and growing conditions before adding a new species. Plants may carry residues from cultivation, and treatments can be unsafe for invertebrates.
Trim with clean tools and remove loose material if it begins collecting debris. Avoid tearing out an entire mature clump during routine cleaning.
Balance habitat and feeding
Observe whether shrimp use the moss, but do not assume their diet is complete because they graze there. Offer suitable supplemental food in measured portions.
Keep water quality and filter flow in view. Moss is one part of a stable aquarium, not a substitute for testing or care.
Use these as general hobby references. Test your aquarium and confirm product guidance before making changes.