The Aqua Medic Fish Trap is baited with food in a feeding tube. The feeding tube allows fish to bite and taste food, but not pull it out, keeping the fish calmly occupied for an extended period of time. The glass door can then be easily released with a quick yank on the nylon thread attached to the closing mechanism. The Fish Trap is constructed in such a way that when it is removed from the aquarium with the fish inside, it remains half full of water. This method considerably reduces the stress on the fish.