I've had an Orange Shoulder tang for a few months and he wasn't doing great, he's eating, grazing and he's a fat boy. He's in a 320 gallon with a blue hippo, bicolor blenny, Fiji foxface, 2 clownfish, 2 spot tang. He was the boss of the tank but on Friday we added a Sailfin and a Naso both about 3-4 inches and he didn't react differently and he continued to eat and graze but today he's just hiding and slowly moving around the tank and not eating seaweed or food. Do you think he could be stressed with the new fish or could he be being bullied or do you think it's something else?
