China’s Bionic Robot Fish Draws Attention With Autonomous Underwater Movement
BEIJING, China — September 20, 2026

A highly realistic robotic fish unveiled in China is attracting attention for its ability to swim and navigate underwater in a way designed to resemble a real fish.

The BG-5 Golden Dragon Fish, developed by Boyagongdao Marine Technology Group, was demonstrated at the 2026 China International Fair for Trade in Services (CIFTIS) in Beijing earlier this month.

Robot Designed to Move Like a Real Fish
The machine is modeled on the golden arowana and uses a multi-jointed tail to generate propulsion rather than relying on a conventional propeller.

According to information from the manufacturer, the robot measures about 640 millimeters long, weighs approximately 3 kilograms and has a listed maximum operating depth of 5 meters. Its maximum speed is around 0.6 meters per second.

The design allows the robot’s body and tail to move in an undulating pattern similar to the swimming motion of fish.

Autonomous Navigation
One of the most notable features is its ability to navigate without following a fixed route.

Exhibition staff said sensors allow the robot to detect obstacles and adjust its path autonomously. A version known as the BG-5V is also associated with functions including path planning, task allocation and cooperation between multiple robots.

Chinese state-linked coverage also showed the robot being demonstrated in a tank at the Beijing exhibition, where visitors were able to see its fish-like movements.

Potential Uses Underwater
Fish-inspired robots are being developed for a range of underwater applications because their propulsion systems can provide maneuverability in environments where conventional underwater vehicles may be less suitable.

The manufacturer has described applications including marine research and underwater detection. Reports have also noted potential uses in surveillance and reconnaissance, although detailed information about the robot’s sensors, endurance and payload has not been publicly disclosed.

The BG-5 itself is not a newly developed product. Its design has appeared on the company’s website since at least 2023, but its appearance at CIFTIS 2026 has brought renewed public attention to the technology.

Biomimetic Robotics Expanding
The development is part of a broader push to use biological designs to improve robotic movement.

Researchers around the world are developing fish-inspired robots that mimic natural swimming patterns in an effort to improve underwater maneuverability and energy efficiency. A 2026 study published in npj Robotics, for example, demonstrated fish robots using a bistable mechanism inspired by biological movement.

As underwater robotics advances, fish-like machines could eventually be used for scientific research, environmental monitoring and inspection in aquatic environments.

Sources
TechRadar – China’s autonomous bionic robot fish
Times of India – China unveils robotic fish modelled on the golden arowana
Moneycontrol – China’s bionic fish robot at CIFTIS 2026