I'm looking to add a wrasse to my 120g aquarium. It's just starting out but it will be a mixed reef with a small shrimp(pistol shrimp). I'm going to have a deeper sandbed so I'd like one that gets down in it. There is also a lawnmower blenny and watchman goby. I've read about a few but wanted to hear from you all which ones you think will do well and what your preference is?