In the article yahoo says that the hoki fish that is used in the filet o' fish sandwich is being over fished and is not as sustainable as once thought. The fish, native to the deep seas near New Zealand, was thought to be a self sustaining option for fish meat. It has a relatively short reproduction cycle and life, living for an average of only 25 years. Recently the quotas for this fish have been lowered because of the self sustainability controversy.
The hoki fish in all it's glory!
Hopefully this issue will be resolved, and McDonald's will not have to shut down the ever so healthy and lucrative filet o' fish business.