Need a pic but it sounds like a fungal infection to me. Id QT the and treat him with an anti fungal. Ive always had great succsess with Mela-Fix even though alot of people seem to think it is garbage
If it isnt getting any bigger I wouldnt worry about it. Usually lumps on fish are infections, but if its just a spot my best guess would be a colour pattern like a freckel.
Those are cool looking. Do you have anything else in your tank that resembles it, or did it just pop out of nowhere? Just dont let it take over that little zoa population you have :P
Good read josh :). Question though, when first adding the CUC will they survive off the live rock and algae? Or will you need to give them very tiny feedings?
Welcome to the forums!
Aquariums both SW and FW are alot of fun. This is one of the best hobbies in the world :D. If you were going to go SW I would go with larger then 12 gallon. A 12 gallon tank would be very restricting for the kind and amount of live stock you could have. Also in my...