I think all shrimp are scavengers. That's what makes them such an integral part of my reef tank, IMO
. They eat the food that falls to the bottom after the fish feeding (along with the Red & Blue leg hermits). I think eating aptasia is like eating potato chips to them. A delicacy that they enjoy but don't need for survival.
I run an SSB
so I don't really know but I've never seen any of my shrimp digging around in my sand bed! I think I end up stirring it up more often than my shrimp.
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