Feeding rhythms are the results of the initiative adapting of fishes to the different and periodic environmental factors such as light, temperature, feeds and so on during their long-term evolution. Feeding rhythms can be used to determine the feeding strategies (feeding time, feeding style and feeding frequency) of the cultured species which then affects feed efficiency and the pollution load of the aquatic water. This paper summarized the research progresses at home and abroad on the detection methods of diel feeding rhythms of the cultured fishes in recent decades. The detailed implementation processes of the research methods of feeding rhythms were also summed up and analyzed. These methods were respectively based on the fullness degree of the intestines and stomachs, daily feeding rates, self-adapting feeding and human observation. Then, the advantages and disadvantages of these methods were compared to provide references for the optimization of the existing detection methods and the proposing of new detection methods. Finally, based on the limits of the existing detection methods of feeding rhythms of the cultured fishes, this paper looked into the future research on and application of feeding rhythms.