1. I would love a vlamingi tang, but my tank is too small. Also a cleaner shrimp, but my flame hawk would eat him. An open brain would be wonderful, but my tank is too bright for them (don't ask
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Mostly though, I really want some SPS really bad. I can't get them locally and it's a major PIA to buy things online (my parents are leery about the security, etc.) My tank could support some.
2. That's a tough question as there are so many exquisite animals in my opinion. So here are a few out of many:
Fish: most big angels, vlamingi and achilles tangs, maroon clown, flame hawk.
Corals: button polyps, all euphyllia, elegance, galaxy, meat corals, open brains, dendronephthya, most SPS.
What about clams?! Awesome.