I've decided that having three tanks is too much work. So I am going to sell off my fowlr tank. Before I do that I want to see which fish I can transfer to my 180g reef. My main concern is not having any fish mess with my gigas clam. Are any of these fish problems? Zebra eel, red coris wrasse, yellow bar wrasse, lyre tail wrasse, and niger trigger. I've had a niger in the reef tank before with success until he jumped out of the tank.