JennM;919239 wrote: First rule of fish traps: EVERY fish except the one you want to catch, will go into the trap.
Never fails.
Damsels are hard to trap since the trap is usually placed on the bottom of the tank, but damsels are mid-water column to top water column swimmers.
Most folks end up cursing, swearing, and tearing the entire tank apart and draining most of it down, in order to remove them.
Reason #1 NOT to get damsels...
Sorry - it's not going to be easy, no matter how you attempt it.
Jenn