So I picked up a couple of zoa frags a couple of weeks ago. All was well and beautiful until they stopped being well and beautiful. They don't like to open anymore and the water chemistry is spot on. Everything else in my tank is doing great. I noticed this a couple of these little spiky critters hanging out on my zoas and knew they had to be the culprit. Am I dealing with anolid nudibranch? Take a look at this video and let me know some opinions on what it is and how to treat it before my zoas are invert poop.
