Hi!
If you are looking for Shrimps, Sulawesi Caridina parvidentata are matching – just for a while. I think, they will be eaten after a while, but so long they do their cleaning work well. I have another tank where they increase very quick, so that’s a good method to move them in the paro tank. Concerning other fish – If the tank is not to small … Betta coccina and Corydoras match also. My Paros don’t behave more shy than usually.
Kind regards,
Dorothee