I caught a couple of amphipods in a tide pool a few weeks ago and my Dottyback munched them pretty quick. A few days ago I caught about a dozen and all of my fish went for them, except for the firefish, who's mouth is much too small for the ones I caught. I caught four small brown shrimp and the dottyback went into hunter-killer mode. Yesterday I caught about a dozen shrimp and the smaller ones didn't last too long. This morning there were about five or six still alive and swimming around. The fish bite at them but my Dwarf Zebra hermit is the only one I saw sitting down for a nice long meal. The dottyback, at one point, attacked a shrimp like a great white shark. He had it in his mouth at the mid-point and was thrashing around a bit. Interesting behavior to witness.