Freshwater game fishing is an underutilized resource by tourists in Costa Rica.

Rainbow Bass, Gaspar, Mountain Mullet, and Atlantic Tarpon can all be caught without getting salty. These fish are all native to the area, while a couple of invasive species are also available: tilapia and rainbow trout. Piranha have been caught as well. All of these invasive species threaten not only the native fish, but other wildlife as well.

Skilled captains of saltwater fishing expeditions keep an eye on the birds to find out where to point their hulls. Big game fishing is always best where there is plenty of activity on the water, as that is indicative of a feeding frenzy. Marlin, Sailfish, Tarpon, and other sought after denizens of the dinner table can be dragged out of Costa Rican waters.