OK - You're in Queens. Take a little trip to southern CT; way less than an hour drive to Greenwich. In Greenwich you'll find House of Fins and Greenwich Aquaria. They're both high-end places, and I bet if you visit it'll be the first of many, many such trips.
I saw the fish you are looking for at both places today, and quite a few of them too.
While you're there, you can visit Reef & Fin at the next town up, Stamford. I haven't been there for a week, and I was buying equipment at the time, but they usually have a nice selection of livestock also.
PM me if you want more details.