I have a FOWLR tank with the following fish ;

3 regal damsels, 1 neon damsel, 2 clownfish, 1 chalk goby, 1 koran angelfish + 1 hermit crab. Which fish would be suitable for my tank?

Its a 50 gallon tank.

Thanks

Actually any of the trigger fish are mean enough to hold the other fish at bay.

but if you actually meant good then you already have some good ones with the exception of the damsels. The become territorial (mean) as time goes on. Hopefully the clown fish are getting along. They could form a mated pair.

I worry about the angel adult size being too big for a 50g. You might want to trade it in for smaller fish.

Several "bottom" fish like yellow watchman gobies are interesting.

And finally perhaps ohters will chime in here. there are many kinds of fish good for that sized tank. More then I have experience with.

my .02

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fw leiden since 1979, fo salt since 1979, mixed reef 55g 2002-2009. Strong emphasis on the tank taking care of itself. Balanced with plant life, no water changes, tap water, no filters in FW. Only dosing calcium, alk, mag in marine reef tanks. http://www.aquariumforum.com/f15/my-...ods-26410.html
recent tanks (till 2009) 7 years- 10g FW leiden 7 yrs, 55g mixed reef 7, 2 yrs, 20g FW leiden, 10 g fw leiden , 29g mixed reef, current tank 55g leiden