Ah thanks ben, something I didnt know there
Yuri, with a tank of that size you do still have lots of stocking options left
There are lots of reef safe wrasse out there, such as fairy wrasse and they are brightly coloured, they do jump however so if you choose one of those it would be worth while to cover your tank if it doesnt already have one.
You could also add another tang, such as a regal however, these are ich magnets so a quartine tank is a must for one of those fish, once aclimatised though they do prove to be very hardy.
Smaller angel fish like the coral beauty and flame angle. These fish can be kept in reefs as it is down to the individual fish as to if it will eat corals or not. My coral beauty is generally well behaved.
Since you have shrimp, all reef safe triggers and puffers are ruled out im afraid.
Im asuming that your porcelain crab is hosting your anemone so if you get a clown there would most likely be some issues there, unless the clown was captive bred and had not ever had access to an anemone previously.
There are just some options for you. Like I said, you do still have plenty of space for more fish, just choose your stocking wisley.
Good luck mate
Josh