Went to 9-D in Carroll Gardens the other night, it's on Court Street near 4th Place.
I really enjoyed it - the big hit was the mango fish, which is grilled salmon with a green mango salad on top. Also loved the seafood salad - mostly warm shrimp with tons of red onions and just the right amount of tartness.
We also had a chicken with string beans which we asked for spicy and it was still quite mild - so this place really needs to be pushed to make things spicier.
The thing I really appreciated about the food at 9-D, as opposed to Joya and Song, was that it was not at all oily. Everything was super light and fresh.
I also spoke to the owner, who said they are greatly expanding their menu in a few weeks.