From yp
From your experience when does the gar start biting? So far it hasn't bothered the eel.I am surprised , pretty soon fire eel will be no more . Death due to injury or stress or a jump outside aquarium.
Longnose will be the next
Reigning champ will be black wolf.
It's a lethal mix unfortunately.
Move the wolf to seperate tank.
Mind you gar will be tempted to bite fire eel anytime it moves.