Any tricks getting armatus off of live? I have found all the other types of "vampire" tetras to be really easy but my new armtus is a pain. Fortunately I maintain my own colony of guppies and swordtails so he has a clean source to hold him over. I have him with a school of brynicus nurse which I thought would help getting off live though now I getting nervous he may try to strike the smallest b. nurse which is similar sized to him