PORTLAND — New Bedford, Mass., is once again the nation’s top commercial fishing port while the value of the catch continues to fall in Portland.

The National Marine Fisheries Service has released its annual report detailing the nation’s fishing catch for 2009.

New Bedford was tops in value of its catch, largely due to sea scallops, bringing in $249.2 million. Dutch Harbor-Unalaska, Alaska, was tops in terms of poundage, with 506.3 million pounds.

In Maine, the value of the seafood brought to Portland dropped to $16.6 million, down from $22.6 million in 2008. The report says Stonington was Maine’s top port, at $26.5 million.

Portland was the No. 56 fishing port by value in 2009, down from 36th a year earlier. The port routinely ranked among the Top 10 in the 1990s.

By volume, Portland ranked 24th nationwide with 37.3 million pounds of fish landed in 2009. Rockland, which was not in the top 50 for value, ranked 33rd by volume with 21.4 million pounds of fish landed and Stonington ranked 45th by volume with 14.8 million pounds.