cant catch darn damsel

[blueyota]

Hello to anyone who reads .... i have been trying to catch two yellow tail damsels in my 140 ...dam things are smarter then they look....i have sat there with a net for an hour straight at one point and they wont even come out of the rock work i put a 2 liter bottle trap in for two days and still no go they are a breeding pair so i want to put them in there own tank and maybe get some small frys and they wont leave any one else in the tank alone.....any help would be great thanks.......