HUKIT
Aquarium Advice Addict
I generally have to remove a good portion of rocks to catch the females since they're very skittish when they are holding. You could also try to catch then during water changes that sometimes helps cutting down on real estate. The last trick which works well, depending on where the tank is try when the lights first come on and the first are slight disoriented. I still get frustrated when tring to catch them and sometimes I'd like to drop a toaster in the tank!!