At the petstore yesterday and they had a nice fish. It is some kind of black piranha but I cant pinpoint wich one. It has a very high back. First one Ive seen in person and I love it. Not shy at all. They got him in a 10 gallon and he will swim right up to your finger. They only have him labled as a Black pirahna just like they have everything else that isnt a red belly. He is about 3-4 inches long. Anyway my question is they want 35 dollars for him. Is that a good price? Also how long could I keep him in a 10 gallon. I have a 55 gallon but I got my reds in there. Could I keep him in my 10 gallon for about a month till i upgrade? Or is that to small? Please let me know ASAP! thanks guys