Fish disease diagnosis is a complicated process and requires high level of expertise. An expert system for fish disease diagnosis has been proved to be an effective tool to help fish farmers in solving problems they meet in practice. However, some small-scale farmers have no computers and are not able to access the Internet. At the same time, telephone and mobile uses increase rapidly, especially in rural area of China, so, the provision of call center service appears as a sound alternative support channel for farmer to acquire counseling and support in disease diagnosis in China. This paper describes a research attempt in developing a web-based hybrid intelligent system for fish disease diagnosis in China. The proposed system consists three main subsystems: an expert system, a web based tele-diagnosing system and a call center support system. This paper looks at why a hybrid system is needed and what are the advantages and difficulties in the developing and using such a system. The proposed hybrid system attempts to facilitate users needs in seeking expert advice and support in different situations.