This article puts the menhaden situation into perspective... and also points out that the two remaining major populations of this "most important fish in the sea" are Chesapeake and the Gulf. Could this mean that one of the two are seriously threatened by the BP spill?
http://www.ethicurean.com/2009/03/23/menhaden/
http://www.ethicurean.com/2009/03/23/menhaden/