I feed my CC star cut up pieces of raw shrimp,krill,oysters,clams,lobster,etc.When he is hanging on the side of the glass like yours I give him a tickle and he lays back and lets me put food between him and the glass and then he reattaches himself to the glass and eats.
i recently got a orange aka red linkia as well - which is what yours is the orange ones are much hardier than the blues so don't worry. when i put mine in the tank after acclimating him it cruised across the glass up to the top corner (like yours) and stayed there for like 3 days. now it moves about the tank constantly.