What is the primary reason the specific species of prey consumed by wahoo differ between Atlantic and Pacific populations?

Answer

The composition of the local baitfish community varies by geographic region

Although the fundamental requirement for small, schooling, high-energy prey remains the same, the specific species available to the wahoo depend on the local ecosystem. Since the ichthyofauna in the Atlantic differs from that in the Pacific, wahoo populations in these regions will naturally target the most abundant local species that fit their dietary needs.

What is the primary reason the specific species of prey consumed by wahoo differ between Atlantic and Pacific populations?
dietfishWahoo