I once caught an American eel on a woolly bugger

I also once caught a duck, and then another duck started attacking it so viciously that it soon became entangled in my line. I had a feisty, squawking mass of duck at the end of my line and I didn't know what to do. Luckily I released them and they didn't seem to be hurt, just a little shaken up(and understandably so)