Which method is effective in controlling fish parasites?

Maintaining optimal water quality is crucial in controlling fish parasites because poor water conditions can stress fish and compromise their immune systems, making them more susceptible to infections. High levels of ammonia, nitrites, or nitrates, as well as fluctuations in pH and temperature, can create an environment that facilitates parasite proliferation. Ensuring that the water is clean and well-oxygenated, with appropriate levels of nutrients, helps support the health of the fish, enabling them to resist and respond effectively to parasitic infestations.

While increasing water temperature can sometimes assist in parasite control—since many parasites have life stages that are affected by temperature—this method may not be universally applicable and can also stress the fish if temperatures exceed their tolerance. Chemical treatments can be effective but often need to be used selectively and carefully, as they can have detrimental effects on non-target organisms and the overall ecosystem. Feeding high-fat diets does not directly address parasitic infestations and could contribute to other health issues if not balanced properly. Therefore, focusing on maintaining optimal water quality provides a more comprehensive and sustainable approach to controlling fish parasites.