Most nudi's have specific diets and unless you are planning to use one for aiptasia or hair algae, I would not bother. For the most part, they are not worth the expense and easily damaged.You'll have to play with clean-up-crews to see what your trigger will and will not go for. Start off with Astrea snails as testers since they are usually cheaper than Trochus along with Nassarius snails. I will assume that any hermit crab will be a "yumyum" along with any shrimp variety.