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Abstract
Recirculating Aquaculture Systems (RAS) represent an advanced approach to sustainable fish production, but their high energy consumption presents challenges for environmental sustainability. This study compares energy consumption and emission data across different RAS configurations through life cycle assessment (LCA) modeling. Results demonstrate significant variations in energy efficiency based on system design, species cultured, and operational protocols. Integration of renewable energy, heat recovery systems, and biofloc technology could reduce energy requirements by 25-40%. Policy recommendations include targeted subsidies for energy-efficient equipment, carbon credit mechanisms for aquaculture, and research funding for innovative RAS designs. This research provides a comprehensive technology-policy framework to guide the low-carbon transition of the aquaculture industry, highlighting pathways to achieve carbon neutrality while maintaining economic viability.