It's good for the heart, but Americans seem to be eating less fish these days.The average American ate 16.3 pounds of fish and shellfish in 2007, 1% less than the previous year, according to the National Oceanic and Atmospheric Administration.

Shrimp remained the top choice for seafood in the United States at 4.1 pounds per person. Americans also ate 3.9 pounds of canned seafood per person, primarily tuna. Overall, the nation ate almost 5 billion pounds of seafood in 2007. The U.S. continues to be ranked the third-largest consumer of fish and shellfish, behind China and Japan.