Question

what is 6significance (pisciculture)??​

Answer 1

Significance means having the quality of being "significant" — meaningful, important. It also refers to the meaning of something. A certain date might have significance because it's your birthday or the anniversary of Princess Di's wedding. Significance starts with the word sign for a reason.

Answer 2

$\tt\blue{Fish \:farming \:or \: pisciculture}$ involves raising fish commercially in tanks or enclosures such as fish ponds, usually for food. It is the principal form of aquaculture, while other methods may fall under mariculture. A facility that releases juvenile fish into the wild for recreational fishing or to supplement a species' natural numbers is generally referred to as a fish hatchery. Worldwide, the most important fish species produced in fish farming are carp, tilapia, salmon, and catfish.