aqua medic quick release sliding glass door is always on standby and only requires a small tug by hand to catch your nuisance fish. The tab is in place and ready to pull. Fish will not feel vibrations from holding the trap door open as with all other fish door traps. The feeding tube allows fish to bite and taste food but not pull it out of the fish trap keeping the fish in the trap for an extended period of time. A quick yank and your fish is caught.