<；P>；PROBLEM TO BE SOLVED: To provide a fish culture system for producing cultured fish, using a marine fish feeding source including copepod. <；P>；SOLUTION: This fish culture system for producing cultured fish comprises using the marine fish feeding source. The marine fish feeding source is obtained according to a production method of the marine fish feeding source including copepod and according to a method for feeding the marine fish feeding source to fry. The fry are fed with the marine fish feeding source, and the system is made of many containers containing the fry. Water in each of the containers is drained through a biofilter system from the container, and filtered by bringing filtered water back to at least one container, and as a result, new nonpathogenic bacteria are supplied to the container and a toxic ammonia product is removed from the container. The system uses copepod as fish feed in the specific fry container so as to secure to be fed to the fry in the specific fry container with copepod which reach an appropriate growth stage and/or size suitable for being fed to the specific fry. <；P>；COPYRIGHT: (C)2007,JPO&INPIT
