Aquatic Cold Knowledge – The Optimum Water Temperature Range For Fish And Shrimp Growth
1. Water temperature is the first factor affecting fish feeding and growth. Generally speaking, fish can grow in 1-33℃ water temperature, 10-15℃ is weak growth period, 15-24℃ is general growth period, 20-32℃ is suitable growth period, 24-30℃ is suitable growth period The most suitable growth period; when the water temperature exceeds 32℃, the fish feeding decreases significantly; when the water temperature exceeds 33℃, the fish stop growing; when the water temperature exceeds 36℃, the fish begin to die. Grass carp feeds the most at 27-30℃, and its growth rate drops significantly below 20℃; carp feeds most at 23-29℃, and growth is inhibited below 15℃.
2. Water temperature is also an important factor in the occurrence of fish diseases, and the water temperature is closely related to the occurrence and prevalence of diseases. Generally, viral and bacterial diseases are most contagious when the water temperature is 25°C-30°C, and the infection is weakened when the water temperature is above 32°C and below 18°C. And some diseases, such as saprolegnia, cucurbita, clinoptilodia and ichthyosis usually occur below 20 ℃, which are epidemic diseases in low temperature season.
