Read the passage below carefully:
In recent years, the implementation of commercial floating cage aquaculture on Lake Volta in Ghana has significantly transformed local protein production. By utilizing open water enclosures rather than traditional land-based earthen ponds, farmers have achieved higher stocking densities and improved fish yield. However, this rapid expansion of aquaculture is primarily driven by the urgent necessity to alleviate overfishing pressures in coastal marine waters and compensate for declining wild fish catches across West Africa. While the adoption of modern feeds and floating pens has generated rural employment and improved food security, these technical operations are merely components of a broader effort to rebuild regional fish supplies. Without sustainable inland fish farming, the region faces severe nutritional deficits due to depleted ocean fisheries.
Statement: The primary argument of the passage is that floating cage aquaculture on Lake Volta was established mainly to compensate for regional fish shortages resulting from coastal overfishing.
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