In fisheries and conservation biology, the catch per unit effort, or CPUE, is an indirect measure of the abundance or scarcity of a target species. In both the Gulf of Thailand and the Andaman Sea, on Thailand’s western side, the CPUE on fishing boats fell by more than 86 percent between the mid-1960s and the early years of the twenty-first century, making Thai waters among the most overfished on the planet.
