Imported seafood stats are here--

http://www.ers.usda.gov/datafiles/Aquaculture/Trade/FishShel......

Shrimp is king at close to 950MM lb/yr. No catfish data suggests few imports.

According to CBS News, in 2009 about 57 percent of catfish sales came from imported sources (See; http://www.cbsnews.com/8301-18563_162-7255802.html ), Paul. Probably the reason that “catfish” is not listed on the government data files is that it is usually imported as “basa”, “swai” or other names. I have seen it in the local supermarkets as both “basa” and “swai” filets. In Loosiana, seafood that is sold in the supermarkets has to be identified by its country of origin, although many times it is written in print that takes a magnifying glass to read.
;-(

C.J.V.