About a week ago I heard a loud clicking sound from my 3 week old 55g aquarium. I could hardly believe the sound of it, but sure enough I had a mantis shrimp. He must have come in with the 90 lbs of Florida LR. Fortunately his nest was easy to locate and he is now comfortable detained in my my 10g quarantine tank. He's 1.5 to 2 inches long, darkish red in color. I've tried feeding him raw shrimp, but he doesn't seem interested. Any ideas on food. Does it need to be live? Now often do they eat? I know he ate a couple of blue-leg hermits in the 55g.