Most piranha are skittish at first.. i have had my brandtii for like 7 months now and he still sometimes gets scared of me.. Its really a waiting game with this type of fish and sometimes you may even wanna give up.. like Joe said jus keep the water clean and just give him time hell come around.. just out of curiosity is he eating yet? if hes eating then you shouldnt have a problem.. if hes not try putting the food in there right before you shut the lights at night.. it took 4 months to get the brandtii to eat in front of me but he always ate at night.. i would love to hear more about the geryi that is another species thats on the top of my "to get list"...
Anthony
