 He insists “the decision of the Chilean National Fishery Council to increase the catch quota of jack mackerel by 11.9 per cent is completely unacceptable, given the current overexploitation of the stock”.One of the simplest methods for identifying a troubled fishery is to compare the average size of mature stock over a period of time.In the case of hake, another popular catch off the cost of Chile, the median length for mature stock has shrunk from 37 centimeters a decade ago to 28 centimeters today.