We've been to Blackfish thrice -- once last year and twice over the past week. Everytime we go, we are amazed. We summer on the Lower Cape every year and, hands down, Blackfish is the best restaurant on the Cape (sorry, PB). The fresh tuna bolognese are what we keep coming back for. Equally delicious are the rabbit ragu and the butter lobster gnocchi. We recommend the panna cotta for dessert.
Writing this good review pains me because I know it will increase the number of competition for tables here. But, the word is out already and it's a shame to keep this as a hidden gem!