中文说明：
人工鱼是真实鱼抽象化、虚拟化的一个实体，其中封装了自身数据和一系列行为，可以接受环境的刺激信息，做出相应的活动。其所在的环境由问题的解空间和其他人工鱼的状态，它在下一时刻的行为取决于自身的状态和环境的状态，并且它还通过自身的活动来影响环境，进而影响其他人工鱼的活动。
English Description：
Artificial fish is an abstract and virtual entity of real fish, which encapsulates its own data and a series of behaviors, and can accept the stimulation information of the environment and make corresponding activities. Its environment is determined by the solution space of the problem and the state of other artificial fish. Its behavior at the next moment depends on its own state and the state of the environment, and it also affects the environment through its own activities, and then affects the activities of other artificial fish.