This thread made me remember this article about the possible future of farmed blue fin tuna
http://news.bbc.co.uk/1/hi/world/asi...ic/6189975.stm

It was in the news yesterday about Gordon Ramsey withdrawing Blue Fin Tuna from his restaurant menus.
http://news.independent.co.uk/uk/thi...cle2594171.ece

I've not eaten Cod for a very long time and am always amazed when fish and chip shops in London offer no alternatives to cod (I always walk out). It's a common phenomenon to have a shop like this offer only one kind of fish.