In this study, we designed bio-inspired fish robot capable of swimming according to the directives sent in form of chemical messengers. The concentration of hydrogen ions in the environment was detected by electro-chemical multi-sensors platform. The acquired signal was then transformed into electronic signal to be used in robot control electronics. The pH sensors were realized by polyaniline (PANI) film electrochemically deposited on the graphite screen-printed electrode surface. The electrochemical characteristics of the modified sensors were studied using electrochemical and microscopic techniques. Experiments on PANI-modified sensors in order to obtain the best sensitivity as chemical sensing used in fish robot were carried out. Finally, preliminary experiments were performed using pH sensors to control fish robot's tail movement. The realized robotic platform is considered as a proof-of-concept for the development of multi-sensors fish robot that can be used for water monitoring and warning tool in fish farms. (C) 2016 Elsevier B.V. All rights reserved.