I realize this is too late as the perp has been taken care of, but I have refered to the Undulatus Trigger for such jobs and a good friend of mine referes to them as the start over fish. They have a well documented track record of killing most any fish they lay eyes on. A customer who wanted to remove a black damsel from his tank,once actually took this advice (given as a joke) seriously and they requested we replace all the dead fish he didnt want to rid him self of. Ij ust think of that a laugh, thought he understood... I was wrong!!! one tank devoid of fish $30 his face when he returned the Trigger Priceless................:dance: