I had a 1 Spot in 60gal had to move him to my 65gal because powder brown tang literally kept him pinned in a corner of the tank. In 65gal he ate every last bubble algae in sight and doesn't touch any coral. Side note: make sure you feed him Nori once or twice a week.
Just lost one this week that I had for years. Awesome fish! Helped keep algae under control and would swim with my yellow tang all the time. Only coral he snacked on was a duncan and it had already started to recede. I'm sure there was some algae there and his big body just furthered the recession of the coral. I wasn't too upset and he didn't bother any other corals I had. Gonna miss this fish.
ive had a magnificent foxface in the past and he didnt eat any corals. in fact i just picked up one today and i dont expect any trouble. fact is foxfaces really dont eat corals, they can and will however graze algae on the rock and coral which sometimes leads to the coral disappearing but the coral would just be a casualty of the foxface eating the algae off it not eatign the coral itself. my recommendation is feed the foxface good, and keep a piece of seaweed and a piece of romaine lettuce in the tank for him to graze on, you can also give those algae pellets but i personalyl dont recommend them because they disolve and make a big mess LOL.
I've had mine for a bit over 6 years. I've learned that if she's well-fed she won't munch on any coral. She needs a good chunk of Nori to munch on most of the day.
I have a Foxface in one tank and a bi-color rabbitfish the other both are great for algae, but I can't have torch corals in either tank because of them. Everything else they don't bother.
I had a foxface who sometimes ate on a Montipora capricornis. It stopped for a few days to a week if I gave it Nori.
I just dont know if I was the one that learned that Nori will stop the fish from eating coral or if it was the fish that learned: If I pick at the coral I get Nori.