If this helps any I have a total of 17 fish in my 240,
5 of which are blue/green chromis.
3 are clownfish that NEVER leave the carpet anemone
yellow watchman stays in his hole (seldom see)
engineer goby stays in his hole (see on a frequent occasion)
mandarin - hides a lot
foxface active swimmer
5 tangs that are active swimmers
When the tangs eventually outgrow the tank I plan on getting another 300+G tank to house them (FOWLR)
That did help. I now have some clue as to what's possible. So far I have:
2" foxface
2" Powder Brown
1" Clarkii
1.5" psuedochromis
1.5" sailfin tang
1" six line wrasse
3" Yellow tang
2" cleaner shrimp
1" peppermint
100 hermits
100 astreas
I'd like to get:
Hippo tang
achilles tang
niger trigger
powder blue tang (might not because of the powder brown)
Pigmy flame angel
Coral beauty
Too many?