“We want to observe environmental pollution situation through the eye of fish” said by one of the members in Taipei Tech’s gold medal winning team in 2017 National micro computer application system design competition. The multi-joint robotic fish designed by Taipei Tech can mimic the movement of a fish, avoid obstacles, and measure energy consumption. By swimming along with fish under water, this design is able to record ocean pollution in the perspective of a sea creature. 178 competitors from 27 schools around the country were at the awarding ceremony on December 21. According to Ye Li-yuan, member of Taipei Tech team, many under water probes are available in the current market yet those machines will scare actual fish away. They also have unideal energy efficiency because they use propeller. Taipei Tech’s robotic fish on the other hand, keeps track on and reduce its energy consumption by moving like a real fish. Taking shape of Tilapia, the 3D model of robotic fish was created by solidworks.