Obviously this video shows the aggressive side of piranhas, but one has to appreciate their nature.  The environment depicted here is not realistic cause in reality a fish which is healthy and not in a confined space might actually manage to escape, however our poor koi here was confined and heavily outnumbered to survive.  I am disappointed by the owner not by the piranhas.

that;s  how they get a bad rap but if you keep them the best way and feed with good food you ll have the best time ever watching them grow.For me is a love even for the future i am thinking of getting the more aggressive species of piranha the black piranha.