In the case of salmon, increased farm production has not resulted in reduced capture levels despite 30±50% declines in international prices for four of the five main species of wild salmon (chinook, coho, pink and chum) during the 1990s. Salmon catches worldwide actually rose by 27% between 1988 and 1997 (ref. 7). Similarly, despite rapid growth in alternative farmed fish like tilapia, wild capture of hake and haddock remained relatively stable during the past decade8. These examples show little obvious effect of aquaculture production on capture rates of wild fish.