Aquaculture (also spelled aquiculture) is the cultivation of the natural produce of water such as fish and shellfish. Mariculture should be a specialized subset of aquaculture.
Some examples of aquaculture include raising catfishes in freshwater ponds, growing culture pearl etc.
... the town the population is spread out with 25.2% under the age of 18, 4.8% from 18 to 24, 27.3% from 25 to 44, 28.7% from 45 to 64, and 13.9% who are 65 years of age ...