对三峡水库鱼类产卵类型的研究,是开发有关保护技术的基础。根据调查,三峡水库现有114种鱼类。水库蓄水后,少数不适应静水和微流水生活的鱼类向上迁移至库尾的上游江段,而适应静水环境的鱼类逐步成为水库的优势物种。这些鱼类栖息环境和摄食特征呈现多样化,繁殖产卵习性也千差万别。根据鱼类对产卵场条件的要求,可以分成以下六个产卵类型:流水水层产卵类型。相关鱼类有30多种,以“四大家鱼”(草鱼、青鱼、鲢、鳙)最为 The study of spawning types of fish in the Three Gorges Reservoir is the basis for the development of conservation technologies. According to the survey, there are 114 kinds of fish in the Three Gorges Reservoir. After the reservoir was impounded, a small number of fish that did not adapt to the hydrostatic and microfluidic activities migrated upward to the upper reaches of the bank tail, while the fish adapted to the hydrostatic environment gradually became the predominant species in the reservoir. The habitat and feeding characteristics of these fish are diversified and the breeding habits of spawning vary widely. Depending on the requirements of the spawning grounds for the spawning grounds, the following six spawning types can be divided into: spawning water layer spawning types. There are more than 30 kinds of related fish, with “four major domestic fish” (grass carp, black carp, silver carp and bighead carp) most