Fish Farming (T5)

Question 1

What are the most common fish farmed?

Answer 1

• salmon
• trout
• tuna
• sea bream
• cod
• lobsters
• prawns

Question 2

What does 1/4 of all fish farmed get used for?

Answer 2

Animal feed.

Question 3

In some fish farms, what three variables are often controlled?

Answer 3

• temperature
• oxygenation
• diet (quality and frequency)

Question 4

What is ‘inter-specific competition’ and how is it controlled in fish farms?

Answer 4

Competition between different species of fish.

Fish are kept in separate tanks to prevent this.

Question 5

On fish farms, how is disease limited?

Answer 5

Fish are kept in sterile water.

Fish are also given antibiotics, however the concern here is whether the antibiotics are completely decayed by the time the fish is consumed by humans.

Question 6

What is ‘intra-specific competition’ and how is this controlled on fish farms?

Answer 6

Competition between fish of the same species.

Fish of different genders are kept apart (unless breeding) and also fish of different ages.

Question 7

Pesticides are used to kill parasites, often from animal faeces - what is the concern here?

Answer 7

The pesticides can be harmful to other non-harmful / helpful bacteria.

Question 8

Give an example of selective breeding in fish farming..

Answer 8

Only the biggest and most healthy fish are allowed to breed.

Question 9

Why is fish farming important?

Answer 9

As the world’s human population has increases so has the demand for fish. This has led to more fish being caught, but some fish species have decreased in number. In order to meet the human population’s demand for fish, fish farming has been used to meet the shortfall.