Hobby Genius is a fish trap to caught sick, timid, shy or even an aggressive fish easily from aquaria. Do you want to remove a sick, timid, shy or even an aggressive fish from the tank ? Does the fish hide in the decoration as soon as it sees the net or does it just keep getting away ? The Hobby Genius fish trap is the answer. Because of ist virtually invisibility underwater it enables simple and no-hassle catching. Place the trap on the bottom of the aquarium. Then pull on the nylon string and open the trap door. As soon as the desired fish has swum inside, slacken the string and close the fish trap. Hobby Genius Fish trap+ improved trap door for ideal catching results+ facilitates catching shy, quarrelsome and sick fish in fresh and marine water aquaria+ acts virtually invisibly under water and so enables catching the animals stress-free and gently+ a 12 mm hole on the top side permits adding more food as bait+ dimensions: 22.0 x 16.0 x 14.0 cm