This is a fish-light complementary system that integrates modern technology with the natural environment by installing specific pillars and solar power panels on the water surface, achieving resource utilization without affecting the original natural environment and water quality, and generating a large amount of electricity every year. The system can be widely used in ordinary residential and commercial fields, significantly saving natural energy consumption and reducing manpower and material input. In addition, it can also effectively reduce energy pollution and consumption, and has a service life of about 20 years, is the most preferred in the development of renewable energy.