Question

How did the common ancestor of these pork fishes migrate across Central America approximately 4 million years ago?

A. Via the Panama Canal
B. It roamed on both sides before the isthmus of Panama closed the connection between Caribbean and Pacific
C. By migrating through freshwater lakes

Answer 1

The common ancestor of the pork fishes likely migrated through the coastal route by following the coast of land across Asia and the Bering Land Bridge, down the coast of North America, all the way to South America.

Step-by-step explanation:

The common ancestor of the pork fishes likely migrated across Central America approximately 4 million years ago through the coastal migration theory. This theory suggests that some populations arrived in the Americas by following the coast of land across Asia and the Bering Land Bridge, down the coast of North America, all the way to South America. The rich marine environment along the coastline would have supported their migration, and travel by boat would have been faster and easier than overland routes.