It seems that even though I did all my research before buying my peppermint shrimp, Ive been blind sided. Today, I went and got a GREAT deal from a LFS that is unfortunately going out of business and brought home a goby, a feather duster and a serpent star......after I got them acclimated, I put them all in the tank, and immediately the peppermint shrimp started picking at them! He even went after my hand when I put it in the tank! Is this normal? I read that they are reef safe and friendly, but he doesnt look reef safe and friendly?