My new ocellaris clownfish is being bullied by my citron clown goby. I noticed that my clown goby would swim quickly from his perch and attack my clownfish, my clownfish wouldn't really fight back and just nipped the clown goby once or just ran away. I'm not sure why the clown goby is aggressive, they are supposed to be peaceful. I suspect this could be because of my watchman goby who flares at the clown goby when he came to close to the burrow, making the clown goby territorial. The clownfish was added last along with a fire shrimp. My two currently does not have any coral. My current inhabitants are 3 scarlet leg hermit crabs, 2 trochus snails, one tuxedo urchin, one citron clown goby, ocellaris clownfish, yellow watchman goby and candy striped pistol shrimp. The fish are all about 2 inches big. Total tank size is 12 gallons. Salinity is 1.025. I feed pellets most of the time but mysis shrimp maybe once or twice a week. My new clownfish is very healthy, he ate during acclimation and at my lfs. I have a breeder box that I could put the clown goby in too. Pls let me know how to get rid of this problem, thx.