President Donald Trump has in many ways worked as President Barack Obama’s foil, rolling back legacy environmental protection regulations and questioning the merit of environmental causes. However, since taking office, his administration has also taken a hard policy line against wildlife crime, continuing and even furthering Obama’s momentum.

Access to and competition over natural resources has been one of the most common triggers for conflict. Throughout the centuries, countries and communities have fought over productive agricultural land, trade routes, spices, textiles, opium, and oil, to name just a few. But the battle over one natural resource—fish—has long been overlooked. As trends in the global fish industry increasingly mirror the conflict-ridden oil sector, fish may become the newest addition to the list of resources driving geopolitical competition. There are five parallels between oil and fish that call for increasing the sustainability of the fishing industry, or we might find ourselves facing what U.S. Coast Guard Captain Jay Caputo has called “a global fish war.”