It's called the Battery and is on Washington Street across from Boca Grande. It seems to be Irish-owned and is mainly a take-out joint. I think that a lot of money was put into it, as the space, a former pizza joint, has been completely transformed.
I tried the fish last night, but they were out of chips and tarter. They substituted a "potato pie" which was essentially fried mashed potatoes with cheese and onions. The fish was very fresh and tasty, but the skin was not removed for some reason. Service was very slow, but friendly. I think it was the first night, so I will definitely try it again in a few weeks when they work out the kinks.