I have several gobies in my 60g tank and have never had any issues. I currently have 1 firefish, green glown goby, yellow clown goby, neon goby, citron goby, a mandarin, a scooter, 2 clowns, and a barnacle blenny. The most aggressive fish is the blenny, he sometimes used to chase the mandarin a bit, hasnt in awhile now, but he was all talk and no action anyways. lol
The most aggressive community fish I've had was a red lipped blenny which recently got taken out by one of the big fish that he was biting. Do your research on each fish and find out if the ones you want have any aggressive tendencies. I knew the red lipped was kinda mean but I did put him in a fish only semi aggressive tank to hopefully get a good combination. he went into the tank attacking everyone so it's all dependant on each individual fish.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.