I want to know if it is possible to get my clownfish to stop killing everything, my female clownfish has been in the tank for about a year perfectly fine but she has now started killing everything. She has just ripped my largest hermit crap out of it's shell, she started to pick at it about an hour ago and wouldn't leave it alone until it was dead, she has also killed a shrimp and a snail in the last few days. The tank is a 30gallon and the 2 clownfish are the only fish in it, I am now having to struggle with clean up crew because she keeps killing them all. Is there anything I can do to stop this