Emerging Coldwater Fish Disease: Diagnosis and Treatment

The rapid growth and expansion of coldwater aquaculture are also marked by the increased occurrence of new potential health issues. Inclusive diagnostic procedures encompassing clinical observations, environmental assessments, and microbiological and molecular techniques stand as the basis for effective disease management. Enhancing the understanding of important diseases and disorders through improved diagnostic methodologies would help in early intervention and the formulation of a more specific course of therapy. Though a number of diseases are reported from coldwater, this chapter covers the few common emerging health problems responsible for mass mortalities in upland farms and hatcheries. These include ich infection, whirling disease, diagenic and monogenic trematodes, argulosis and fungal infestation, enteric red mouth disease, coldwater bacterial diseases, infectious pancreatic necrosis, and infectious hematopoietic necrosis, as well as dissolved oxygen, temperature, and ammonia toxicity, Information on disease investigation protocols including upcoming promising fish disease diagnostic techniques is described. Using innovative and updated diagnostic techniques for fish diseases significantly reduces the risks associated with water deterioration and fish diseases, supports the choice of targeted medication, reduces disease control costs, protects valuable fish stocks, and increases overall fish production.