Which of the following may cause disease in a fish pond?
Answer Details
All of the options listed can contribute to disease in a fish pond, but poor management practices are particularly significant. Poor management practices can include things like overstocking the pond, failing to maintain proper water quality, not properly cleaning and disinfecting equipment, and not providing adequate nutrition to the fish. These practices can create an environment that is favorable for the growth and spread of disease-causing pathogens, leading to outbreaks of disease in the pond.
Mixed stocking refers to the practice of stocking a pond with different species of fish. This can increase the risk of disease by introducing new pathogens or by creating stress in the fish that weakens their immune systems.
Liming is the practice of adding lime to a fish pond to adjust the pH of the water. While liming is important for maintaining the health of the fish, it can also increase the risk of disease if not done properly.
Harvesting refers to the removal of fish from a pond. While harvesting itself is not a direct cause of disease, it can disrupt the balance of the pond and increase the risk of disease if not done properly. For example, if fish are harvested too frequently or if diseased fish are not properly disposed of, it can create an environment that is favorable for the growth and spread of disease-causing pathogens.