This paper is concerned with motion tracking control of the robot fishes along with the 3D holographic fishes using Radio Frequency (RF) modem, multi-link and free-swimming biomimetic robot;the researched robot fish motion control is related to the speed control through RF modem and it focuses on detecting the moving object in the water as well as tracking the robot fish along with 3D holographic fish in the aquarium world designed for an augmented reality. Color attracts the every one and easy way to recognizean object. Physically, the object of the color recognizes because of light leaving from their surfaces. In the aquarium robot world, various colors of robot fishes along with 3D holographic fishes are mimicking the behavior of the real fish and it forms an augmented reality. In this study, this algorithm is designed to detect the position of the robot fish using color detection algorithm with the Open CV through camera. By using this position data, we are able to track the robot fishes using color mark. At this color mark zone, these robot fishes and 3D holographic fishes will be stopped until this color mark remove from this zone, and 3D holographic fishes will swim, following the robot fishes, after remove this color mark, again robot fishes and 3D holographic fishes swim, this tracking process will be continued until this algorithm stops. The performance test of this detecting algorithm has been satisfied.