I do remember reading somewhere that pygos had stronger jaws, so I'd have to go with an adult p. piraya. I really can't remember where I read the article though...
1gasman;1130048; said:i used to thing it was to do with the piranhas personality but just becasue a piranha is skittish with us approaching the tank doesnt mean he wont be mega aggressive with another piranha.
ive heard of biggish rhoms being skittish,but thats with us.put another piranha in their tank and they wouldnt be skitish with each other.
as for jaw power im sure both serra and pygo could easily take a clean chunk out of each other no problem.so doesnt really matter with jaw power at all.were talking about a fish taking a bite out of another fish and not metal,both specie will get the job done.
gasman
