I bought a file fish to take care of majano's and it did a great job until they were gone. then he started pecking at my Acans! so I put my home made fish trap in the tank with an Acan inside, 3hrs later during my saturday afternoon nap, my daughter says Dad arent you trying to catch that fish? he is now in my sump!
here is a picture of the trap with my pygmy angel in it when I was trying to catch a crab.