Here's what a quick Google search brought up.

Lots of hits, great majority in support of EcoFish, but here are some different views. Do a search yourselves for more viewpoints.

1. National Public Radio-mostly support it, but rely on the owners of EcoFish for information about it.
http://www.NHPR.org/content/fullmonty_view.php/1465/

2. Environmental News Network-totally support it. I think these guys are pretty green.
http://www.enn.com/enn-news-archive/2000/01/01302000/ecofish_9514.asp

3. Center for Consumer Freedom-totally rip it. The CCF is a coalition of restaurant operators who support your right to a "full and varied restaurant menu" and the "right of adults and parents to make your own choices about what to do with your money."
http://www.consumerfreedom.com/article_detail.cfm?ARTICLE_ID=119

EDIT: EcoFish has their own website, too.
http://www.ecofish.com

Anyone else have anymore tidbits?

Fish on...

Todd.