A great review from the smart, inventive Cory Doctorow went up on boingboing.net on Tuesday. Here's an excerpt:
Chock full of real historic curiosities about pirates, sly humor for grownups, excellent action scenes and general quantities of swash and buckle, Fish is a great, self-contained addition to the canon of fun pirate fiction. Perfect for young readers, even better for reading aloud at bed-time, thanks to the plentiful cliff-hangers.
And the rest.