I'd warn you about the barnacle blennies. lol Mine is very nasty. Constantly chases the other fish. he is a good eater though. hehe
I like the midas blennies, mine is constantly out and about, very active. I also like the fairy wrasses, wish i could keep them but my wrasses are mean. And in my opinion no tank is complete without a hawkfish of some kind. I have three, a flame, arc eye and a falco. They all get along with the other fish too.
As for a tang, I had a 55g before and I really wouldnt even put a Kole in one, sorry. They do swim quite a bit, maybe not as much as a yellow or blue, but they still swim ALOT.
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.