Very easily. Mandarin is the last addition so you can set up pods. Be careful because he could eat too much and you'll need an alternative feeding method. I'd suggest going for something a little more interesting since they are all stationary and reclusive fish. Something fun like a fairy wrasse, or a designer clown would add nice color and different behavior
That’s not all I was planning on in the tank I was just worried if they would work well together. The full list is a coral beauty royal gramma starry blenny, pistol shrimp and fire shrimp, clown goby 2 firefish, mandarin fish.