Overstocked for 150 gallon?

[OhCheezy]

63 inch L
27.5 inch W
25 inch H

2 percula clownfish
1 picasso clownfish
1 3 stripe damsel
1 blue hippo tang
1 yellow tang
1 foxface
3 firefish
1 neon goby
5 blue/green reef chromis
1 royal gramma basslet
2 zebra barred dartfish
2 carberryi anthias
1 yellowtail damsel
1 longnose hawkfish
1 six line wrasse
1 watchman goby

 

[trido]

Well, they are mostly small fish. A couple are going to be territorial jerks(damsels and clowns) which will cause stress and aggression issues. A bunch of others (chromis, Anthias, dartfish, and firefish) require feeding upwards of six times a day which, unless you have a great skimmer, perform regular WC's and a great refugium, will eventually lead to high Nitrates and Phosphates. But other than that you might be fine. What will most likely happen is that the weak fish will wither away and die off. Survival of the fittest.
Ya, you probably have too many fish in there.

 

[PatW]

You have only one fish that is really not suited for a 150, the hippo tang. It requires a much larger tank.

You have a bunch of fish. Most tend to be small. Some are quite aggressive. You also have some very mild tempered fish in there. I think the temperament mismatch will be your biggest long term problem.