What is Pisciculture, sericulture, aquaculture?

Fish farming is known as pisciculture.

Aquaculture is a wider term and includes farming of aquatic organisms  including fishes, molluscs, plants and other organisms.

For sericulture:
Please refer the link below:
https://www.meritnation.com/ask-answer/question/what-is-sericulture/fibre-to-fabric/5477425