Ok so a few weeks ago we decided that it was time to get Billy (our Betta) a few friends. We picked up 1 red tailed shark aka Reggie and 2 Platties. After about 1 week one of the Platties kicked the bucket. Ok we thought hey it happens right? So I cleaned the tank and all that then fast forward a few weeks to this morning. We wake up and go see how the fam is doing. Billy swimming happy, check. Reggie doing what he does check,......but wait where the hell is Patty the Plattie? Oh she is floating under the bell with her rib cage opened up. So my question is this, would this more than likely be Billy or Reggie responsible for this horrid act?
Oh and we have a heater, filter, plants, and a 10 gallon tank.