What plays well on the small screen occasionally generates honest laughs on stage, though 'Fish' becomes ponderous and ultimately feels like a sitcom episode tenuously stretched over two-plus hours...The humor is vintage David, and you either find it appealing or you don't; I thought a lot of the writing was lazy or boorish...This 'Fish' has a tendency to meander. More than once I felt as if the comedy was hitting a brick wall, only to be jarred out of my stupor by a set-up that could only come from David's sharp, Sheepshead Bay-cultivated mind. Those moments are too rare. Among the fresher things about David's comedy is the endearing performance by newcomer Jake Cannavale...The young man makes the most of his big moment in the second act, holding his own against seasoned pro Houdyshell...Hardcore Larry David fans will get a kick out of seeing the comic live on stage. Most theatergoers, though, will be better off throwing this one back in the river.