Look i've had two fahaka puffers and the only way to bring them down it by desease because they are probly the toughest fish i've ever had...When i first got my puffer he was two inches and i had a 12'' florida gar....the puffer attacked my florida gar to the point where the gar had very little fins left...now the same is happening with my new 2'' puffer and my 5'' redtail wolf... the wolf now hides from the puffer but this puffer has left it alone now...i guess it took out all it's agrivation on the two clown knives that it recently ate ...so like i said given alot of room pound for pound nothing can touch a Fahaka puffer