Aquaculture in the world Select a lesson
 

The environmental impact of aquaculture
What s a fish farmKinds of aquaculture for kidsBenefits of aquacultureProblems of aquacultureImportant aquaculture facts for childrenAquaculture terminologyThe economic benefits of aquaculture
SUGGESTED LESSONS
Natural resources for childrenGenetic engineering
Green energy
crude oil
Effects of overfishing
Water shortage
climate change
DeforestationThe ozone layer
Waste managementWhat is an ecosystem
Wasting foodfresh-fish-farms

marine culture



What is Aquaculture?


Aquaculture involves the art, science and business of breeding aquatic animals and plants in fresh or marine waters for human use. It also extends to the marketing of such organisms in a controlled environment.

Aquaculture contributed 43% of aquatic animal food for human consumption in 2007 (e.g. fish, crustaceans and molluscs, but excluding mammals, reptiles and aquatic plants) and is expected to grow further to meet the future demand.

Aquaculture comes from these two words:
Aqua” (water) and “Culture” (to grow).

It is kind of agriculture, and therefore, it requires inputs such as clean water and nutrients. Looking at the bigger picture, it also requires, storage for harvested produce, transportation and marketing facilities. Inputs often depend of the species that are farmed. Species lower on the aquatic food chain usually require less input, as they feed on microorganisms and are fine in just clean water. More inputs such as fish or fishmeal, cereals, or grains are required, as we get higher on the food chain with species such as predatory groupers, salmon, or tuna.

Aquaculture is an old practiceWhen we think of aquaculture, we often think of fish farms. This is correct, although it may include other water animals such as clams and oysters. It also includes crops such as seaweed, often cultivated to feed water animals.

Aquaculture typically comes in two major forms.

Warmwater aquaculture: Raising plants and animals that do well in warm and fresh water. Examples are catfish, crayfish, sport fish, and ornamental fish.

Coldwater aquaculture: Raising plants and animals that do well in cool and fresh water. Examples are salmon and trout.

Aquaculture activities can also be classified according to their degree of intensity:

Intensive — involving the high-density culture of organisms, with regular and nutritionally complete feeding.

Semi-intensive — involving lower densities, with naturally occurring feed, and some direct feeding.

Extensive — involves a low density of organisms, often with naturally occurring feed.

Under these three areas, there are several water environments that are required for specific species.

Types of aquaculture

fish farms