Thats pretty cool.. i thought this post was gone for good. I have a gallary at Piranha Fury they also have alot of info on Piranhas and other fish like cichlids. you should check it out I have the same name on there as I do on here.
Edit: What size is your Pygo? and where did you get it from? I am going to open a fish store and I will have Piranhas and all sorts of other fish..I will let everyone know when it is open..