I was wondering if neon tetras would be to quick for a piranha to eat or would the eventually become food? I had a 20 gallon tank filled with neons and I woke up one day to find 2 huge piranhas cramped in it and my cousin said they where my birthday present, I had to buy a 55gallon tank for them because I liked them to much to give them up.............but anyway they didn't eat any of the tetras in the tank so if I add lots of places for them to hide would they will survive?