Can they all fit in a 150 gal aquarium? I plan on buying the best filtration there is, heater, and doing %50 water change a week. Can there be a cleaner wrasse or neon goby in there too? Or will it become food? Thx.

OK. First, if they are not going to become huge when they finish growing, a 150 gal shyould be allright. Second, i would avoid putting in the wrasse, and goby until you think your other fish will not be large enough to eat it, but if they are all within each others size range, than i see no problem!