Before revision:  Our analysis may have interesting policy implications for the ecology of fishing areas  .
After revision:  Our analysis may have interesting policy implications for the ecology of fishing areas . It also suggests that herding behaviour here, just as in financial markets, will lead to significant fluctuations in the amount of fish landed, as the boat concentration on one area at a given point in time will diminish the overall catch, such loss not being compensated by the reproduction of fish in the other area. In other terms, individually rational behaviour will not lead to collectively optimal results .