Aquaculture is the activity of raising fish or all types of organisms that are all or part of their life cycle in the aquatic environment starting from preparation, maintenance to harvesting activities. Aquaculture can be divided into two activities, namely fish enlargement and fish hatcheries. Fish enlargement is the activity of maintaining, raising fish seeds or seedlings up to the size of the harvest that is accepted by the market in a controlled environment. Fish hatchery activities are fish breeding activities that include the process of raising broodstock, spawning, hatching eggs and raising fish larvae until they reach the size of seeds that are ready to be stocked in the enlargement phase in a controlled environment. Veterinary vaccinating rainbow trout (shutterstock.com) In aquaculture activities at the stage of fish maintenance, be it at the stage of raising fish seeds to the size of fish ready for consumption or at the stage of caring for eggs to larval rearing activiti...