Never had this happen, RBP'S kept on swimming toward my hand.

[skjl47]

Hello; Perhaps the fish have begun to associate your hand with being fed. I have gotten fish to come to one corner of tanks by lightly tapping on the tank's top before each feeding.

 

[goosej13]

rub some beef blood all over your hand and then stick it in... that usually works for me to keep them away

 

[hengyi86]

rub some beef blood all over your hand and then stick it in... that usually works for me to keep them away

hahaha.... please dont try that... but i am sure as a piranha keeper u know what to do and whats not