Homeostasis in aquatic animals is the ability to maintain internal balance despite fluctuating external conditions, such as temperature, salinity, and oxygen levels. Through mechanisms like osmoregulation, thermoregulation, and acid-base balance, these species can thrive in diverse aquatic environments. This regulation is critical in aquaculture, where changes in water quality can impact the health and growth of farmed species. By understanding how aquatic animals maintain homeostasis, aquaculturists can optimize environmental conditions and improve production outcomes. Monitoring key factors such as water chemistry, oxygen levels, and temperature is essential for maintaining a stable and productive aquaculture system.