The Seafood guide is worth thinking about when you make your choices. If you don't know the source then assume it's the worst option.
http://www.seachoice.org/
Seefood pocket guide PDF -
http://www.seachoice.org/files/pdf/S...lertcard09.pdf
Sushi Guide PDF -
http://www.seachoice.org/files/pdf/S...lertcard09.pdf
Iphone app -
http://itunes.apple.com/app/seachoice/id318613515?mt=8