Abstract:

Opsariichthys bidens and Acrossocheilius hemispinus are two kinds of indigenous freshwater fish in Fujian Province. They have good market foundation, development potential and broad promotion prospects. However, in the process of large-scale artificial breeding, it is found that the parent fish of the two indigenous freshwater fish have common problems such as slow gonadal development, poor synchronization, low amount of eggs and poor egg quality, which seriously affect the industrialization process of the two fish varieties. The strengthening cultivation of parent fish is beneficial to improve fish reproductive performance in order to obtain a large number of high-quality fish fry, so the strengthening cultivation of parent fish is particularly important. At present, the study of strengthening cultivation of parent fish has become an important, complex and extensive research topic. This paper expounds on the research status of strengthening cultivation of parent fish of the two indigenous freshwater fish from the aspects of parent fish strengthening concept, strengthening methods (nutritional strengthening and environmental stimulation) and parent fish conservation scheme. This paper also analyzes the current problems and shortcomings in the cultivation, and puts forward corresponding suggestions, so as to promote the high-quality development of Opsariichthys bidens and Acrossocheilius hemispinus.

Key words: Opsariichthys bidens, Acrossocheilius hemispinus, strengthening cultivation of parent fish, nutritional requirements, prospect