The Ultimate Aquaculture Quiz

Staff

4 Min Quiz

What is aquaculture?

Aquaculture is the farming of fish in a controlled environment, in either freshwater or saltwater.

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Since when have goldfish been cultivated using aquaculture techniques?

The Chinese have cultivated and domesticated goldfish since around 800 A.D. Goldfish cultivation spread to Europe and other eastern countries in around 1650 A.D. and it was only in the late 1800s that goldfish moved indoors.

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What important nutrient does fish provide?

Fish is one of the most important sources of protein. Many of the world's poorest populations depend on fish as a protein source.

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What has happened to the demand for fish in recent times?

The demand for fish has doubled since the 1950s.

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Why is the aquaculture industry booming?

Overfishing has lead to the scarcity of some species of fish, such as Atlantic salmon and Chilean sea bass. This has boosted the aquaculture industry, where these fish are bred under controlled conditions to meet the demand for fish products.

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What is the primary form of aquaculture?

The primary form of aquaculture is fish farming. This is the process of cultivating fish in man-made tanks for commercial purposes.

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What sort of water is used for mariculture?

Marine organisms are cultivated in mariculture using saltwater or seawater. This is done using enclosed portions of the ocean or tanks filled with ocean water. Finfish, shellfish and sea plants, such as seaweed, are cultivated using this method.

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Products for which other industry, besides fishing, are cultivated using mariculture?

Products cultivated in mariculture are used for cosmetics, fish meal and for jewelry, such as cultured pearls.

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How is macroalgae commonly referred to?

Most algae cultivated by algaculture is either microalgae or macroalgae. Macroalgae is commonly known as seaweed and can be difficult to grow due to its size and cultivation needs.

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Algae is usually cultivated in open-pond systems. What is the problem with these systems?

Open-pond systems, such as pools, ponds and lakes, are popular because they are cheap and easy to build and they produce the highest yields of algae. However, algae farms grow best within a particular range of temperature and light, which cannot be controlled in open-pond systems.

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What type of algae crop is yielded in closed-pond systems?

Close-ponds allow for light and temperature monitoring enabling more species of algae to grow. However, since the ponds are usually smaller, less algae is yielded.

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The U.S. government is investigating the use of algae for what?

Algae contains large amounts of lipid oil, which can be converted into biodiesel fuel. Algae grows very quickly, meaning it could be a renewable source of fuel.

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Why are integrated multitrophic aquaculture (IMTA) systems economically sustainable?

IMTA systems are advanced systems of aquaculture, where waste products of one species become the food of another species. For example, shrimp and fish excrete phosphorous and ammonia, which is used by seaweed to grow. This makes IMTA systems both environmentally and economically sustainable.

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Toward the end of which century did North Americans begin to widely practice aquaculture?

Aquaculture possibilities were explored in the U.S. and Canada from the mid 1800s. However, only it was only in the late 1900s that aquaculture became widely practiced in the U.S.

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Which of the following are important factors when choosing the right site for a fish farm?

Aquaculturist look for a site with the right conditions, including temperature, salinity and fertility. If these factors are right, organisms should be able to flourish.

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Which of the following is a feature considered before aquatic organisms are chosen for an aquaculture site?

Features of aquatic organisms that are considered for aquaculture are their reproductive habits, the requirement of eggs and larvae, the ability for the organism to adapt to crowded conditions and the feeding habits of the organism.

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How do fish catch diseases?

Fish farms may become overcrowded, leading to a build up of fish waste that can pollute the water. As fish rub against each other or against the tank walls, they get scratched or cut, providing an opening for diseases and infections.

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How do aquaculturists avoid crowding problems?

Aquaculturists cultivate fish that easily adapt to high-density conditions, thereby decreasing the chances of overcrowding problems.

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Which type of fish suffers most from sea lice?

Sea lice are a problem for farmed fish, especially for Atlantic salmon.

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How can water be a problem for fish farms?

Water may be contaminated with pesticides or other chemicals that get washed into it.

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Image: refer to hsw

About This Quiz

Seafood has been popular for centuries, but it should not be taken for granted. The demand for sea products is outweighing the number of organisms left in the sea. This is where aquaculture comes in. Take this quiz to see what you know about aquaculture, one of the fastest growing fish industries in the world.

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