Anyone have a proper fish trap in calgary or area that i could borrow for a few days? I picked up a long nose butterfly to help with my aptasia problem, and he is not helping in keeping the aptasia under control rather keeping my clam population under control

. I have been trying the pop bottle/net method for a few days now with no luck, he is far to smart for that. so i would like to try a proper trap with a door and my clams inside it. He is about 1.5-2" so it need not be anything large just big enough to get him and the clams inside.
Thanks,
Scott
Edit; or any other useful methods for trapping