My vist to my local lf? What do you think

Today me and my brother went down to my local mega-store called Aquarium Adventure in Carle Placed, NY to pick up some new driftwood, I brought my camera because my brother informed me that last time hew was there they had a black piranha in their tank which appears to be about 180 gallons or so with about 5 caribes and a giant tern about 9 inches.. He informed them that someone is going to die either the black or another piranha but they wouldnt listen so I thought I show you guys