Thanks , I bought 3 hysterix , whenever Aquascape had That great sale,some years back. 1 female died about 1 year ago, the other female and male are growing fast . Seems that the male is harassing the female and I have to separate her to heal up from bites. Happy the black one is cool , I still don't trust him with the smaller 8" armatus. , the 11" can keep away from getting cloaked