i had the same problem with a powder blue, i needed to rid of, i tried numerous things with the trap i used and i found when i opened the gate part the food would float out by the time the powder blue warmed up to the trap in the water, it was very fiesty, but then i let the trap in the water for a good hour , before i opened the gate, and let me tell you the powder blue was the first one in once i opened the gate.....one month of tryin and tryin, why didnt i think of that when i first go it thank god i didnt move rockwork or remove water, and take stressing my corals and other fish....but i like the fishing idea.....i think it would be fun