Capture fisheries and aquaculture depend on the use of natural renewable resources and other resources (e.g. aquatic species, land and water) as raw material. Other resources such as hatchery-produced seeds, feeds and fertilizers are artificially generated. Because fishery resources are finite, there is competition for them, within the sector and with other types of uses.
The most harvested species are oysters and carps. The use of local species is recommended but introduced species are responsible for 17% of the world's finfish production with significant social, environmental, genetic and economic impact. The culture of several important species still relies on the collection of brood stock or seed from natural populations. Aquafeed resources production is one of the fastest expanding agricultural industries in the world, with growth rates in excess of 30 percent per year.