The Amazon Basin's Arapaima, one of the largest freshwater fish in the world reaching ten feet long and weighing up to 400 pounds, were once abundant in the lakes and ponds of the Rupunuini in Guyana. In the 1970ís harvesting of this species began in earnest leading to such a dramatic decline in numbers that by 2001 there were fewer than 1000 individuals in the entire region. A 2014 study by Virginia Tech's College of Natural Resources and Environment found that the fish has become extinct in some regions due to overfishing. The good news is that in 27% of the communities have established management rules for fishing the arapaima; the density of the fish in these areas is 100 times higher than in regions where no rules are followed or regulations are ignored. Pete Oxford has documented such a success story where an average of 17% annual population increase has been achieved in a properly managed area.