I've been trying to find places that stock oddballs too. I'm more interested in morays, and almost nowhere seems to have anything beyond the standard snowflakes and zebras. If they do, it's either another Echidna spp. or a fimbriated. The furthest "out there" ones I've seen lately are jeweleds, whitemouths, gdms and goldentails.
LA/DD used to have a lot of Caribbean/Atlantic species this time of year but now they hardly have anything in that vein, and everywhere else is even worse.
Then again I haven't paid much attention to the fish world for the last 4 years or so, so I have no idea what developments might be affecting this.