The industrialized recirculating aquaculture system （RAS） has emerged as a promising approach to achieving standardized culturing and intelligent management in aquaculture. This system conforms to the principles of resource conservation and environmentally friendly green development, making it a leading direction for the future of the industry. The aquaculture tank, being a vital infrastructure component of RAS, plays a crucial role in optimizing space utilization, water-injection energy efficiency, waste collection and discharge effectiveness, and ensuring uniform distribution of dissolved oxygen to support the healthy growth of aquatic organisms. This article provides a comprehensive review of both domestic and international research on the hydrodynamic characteristics of RAS. By summarizing the current research hotspots and trends in this field, it aims to analyze how various factors such as tank structure, water circulation driving devices, and waste discharge devices influence hydrodynamics within RAS. The research results presented in this article lay a solid foundation for the development of an "energy-saving, emission-reducing, ecological, and efficient" aquaculture system.