Biology - Fish farming

Question 0

Maintain water quality

Answer 0

Bubble oxygen into water
Allows fish to respire

Removal of waste

Question 1

How fish farmers maximise production

Answer 1

How fish farmers maximise production

Question 2

Controlling intra-specific predation

Answer 2

Keep fish of different sizes and ages in different cages

Question 3

Controlling inter-specific predation

Answer 3

Use enclosed system
With hanging and suspended nets
To prevent predation

Question 4

Controlling disease

Answer 4

Add fungicide to water

Add antibodies to food

Question 5

Remove waste products

Answer 5

Wastes sink to the bottom
Are removed at regular intervals
To decrease bacteria which use up O2

Question 6

Feed fish regularly with high quality food

Answer 6

Use food high in protein for quick growth

Feed in small amounts to minimise waste

Feed frequently through the day to increase growth

Question 7

Use selective breeding

Answer 7

Select individuals with desired characteristics
Allow these to breed
Choose offspring with desired characteristics