so, filbert has been living with his plecco (superman) for a really long time now. they lived together just fine (filbert would chase superman, but superman always got away.) however, yesterday i just happened to walk in the room to see filbert attack superman. he took a pretty good chunk out of superman's tail fin. i took superman out and put him in a small fish bowl i happened to have. superman made it through the night. i decided to try to put superman back in filbert's aquarium. as soon as he hit the water, filbert had him again. this time by the back. i managed to pry superman from filbert, thank goodness filbert just had him by the fin (the fin is pretty much gone). i put superman back into the fish bowl, and so far he's still alive.
my dilemma is: i don't want to see superman get eaten, but filbert is attacking him every chance that he gets. i know, i'm a softie. so should i just give superman a burial at sea (aka-flush him), because it's not fair to keep him in the fish bowl by himself. i have a light and a filter for the fish bowl, but the air pump for the filter is currently being used in filbert's aquarium.

