Which factor influences fish breeding in aquaculture?

Water temperature is a crucial factor influencing fish breeding in aquaculture because it directly affects the reproductive behaviors and physiological processes of fish. Many species of fish have specific temperature ranges that trigger spawning; for example, warmer temperatures can simulate the arrival of spring or summer, which often prompts breeding.

In addition to triggering spawning, water temperature can also influence egg development and hatching rates. If the temperature is not optimal for the species being bred, it can lead to poor survival rates of both eggs and fry (young fish). Therefore, managing water temperature is critical for successful breeding and ensuring high survival rates of offspring in aquaculture settings.

In contrast, while tank material, type of feed, and quantity of fish are important factors for the overall health and production in aquaculture, they do not directly control or stimulate the breeding process in fish. They may indirectly impact fish health and growth, but water temperature plays a more definitive role in the breeding cycles and reproductive success of fish.