But there’s extra to Costa Rica’s billfish story than sailfish alone.
The majority of the time the dorsal fin remains at relaxation in a deep groove along the highest of the rooster’s back, but when excited it's going to elevate it to look bigger and help herd bait fish they are after.
Part of the drum household, it also has a sloping forehead and a very strong, bone-like jaw.
Seasonal fish migrations, wet and dry seasons all have an impact on fishing quality.