My personal opinion is no, stay away from the nems. I had one a few months ago and really didn't like it. It can move, if it's large it takes up to much tank space and it requires high lighting and pristine established water.
Get some corals, they might host that too. Even if you got a nem, theres no guarantee they would host it anyways.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.