I've made it to ArtFish on the Mile twice now and have to say that the food is really fantastic. The owner is/was a seafood importer who gets himself first pick and controls the product very well. I mention him first, because freshness in seafood to me is probably the most crucial element for a restaurant. The chef is Chef Allen's former sous-chef and very talented. A friend also told me that Chef Allen's pastry chef would be coming on board as well. I don't know if that's true or not, but bodes well for the restaurant. Menus seem to change rather frequently, directed by what's available and therefore printed unassumingly on legal sized paper front and back. Flavor profiles are a fusion of Middle Eastern and Miami Tropical and prices are relatively reasonable (teens to twenties for a whole fish at lunch, 20s to 30s for dinner). T'here's only been one server both times I went, but she was more than capable of handling the load.
The one thing I will comment on is the wine I had one of the times was a very nice unoaked chardonnay by the name of Omrah which while delicious, sold in the 50s. I looked it up when I got home, and I found it online for $16. That's a rather steep mark-up. Granted, you can't find it very easily, so perhaps he's the one getting a poor deal, but that just felt a little steep to me. Still, the wine was quite good and was happy drinking it at the time.