What is the primary external factor influencing how close a white marlin gets to its maximum potential age in the wild?

Answer

Fishing pressure

The primary factor determining the actual lifespan experienced by the wild population, shortening their lives compared to theoretical maximums, is human activity, specifically fishing pressure.

What is the primary external factor influencing how close a white marlin gets to its maximum potential age in the wild?
animalfishlifespanMarlin