I got a puffer about 2 weeks ago and just recently hes been causing me problems, hes killed two of my bass and just killed my dollar sunfish, that was the last straw, I dont know what to do, there must be a way to get him to stop nipping the fins off all my fish? Should I have more cover, have have some plants in there, its not a ton but it helped with my jags aggressiveness. help me out guys, I want to start a salt tank for him but I could never keep any fish with him if he keeps doing this.