They had them in a tank with Mexican blind cave tetras Astyanax mexicanus for some reason. Not sure why. But they did seem to get along very well
High fin sharks were kind of fun to watch. There were always digging into the sad.
Here is a close up view
Here is the red belly piranha Pygocentrus nattereri tank. These guys are fully grown and really fat)))
Look at these silly faces)))
Fat looking Pygocentrus nattereri Piranha
Group Shot of the Piranha School
Honestly, I dont get the interest in Piranhas. They are really boring. These guys were sitting in one place the whole time. I mean, they barely moved.