Fish Health

Diagram 1 shows the 3 factors (a,b,c) whose interaction can result in disease (Z) in fish. What are those factors?

• Environment, host and pathogen

• Environment, host and fish genetic

• Host, pathogen and fish genetic

• pathogen, environment and fish genetic

Many diseases in fish are known to occur as a result of..................

i. Stress

ii. Poor water quality

iii. overcrowding

iv failure to quarantine new or sick fish

v. overuse of antibiotic

• i and ii

• i, ii, and v

• i, ii, iii and iv

• All of the above are true

Which of the following environmental problems will cause disease outbreak in fish?

• Lack of food/ starvation

• Poor farm management

• High stocking density

• High water temperature

The following are the signs or symptoms of disease in fish except

• Actively swimming

• Laterally recumbent

• Distended abdomen

• Bulging eyes

Formalin can be used as a bath treatment to control external parasitic infections of fish

• True

• False

Aeromonas hydrophila is a common parasitic pathogen that causes disease in fish

• True

• False

Describe the clinical signs. Select all the correct answers.

• Skin discolouration

• Loss of scales

• Skin erosion

• Exophthalmia

Describe the clinical signs. Select all the correct answers.

• Loss of scales

• Skin hemorrhages

• Exophthalmia

• Skin erosion

Describe the clinical signs. Select all the correct answers.

• Exophthalmia

• Abdominal swelling

• Scale protrusion

• Skin hemorrhages

 

Describe the clinical signs. Select all the correct answers.

• Scale protrusion

• Skin hemorrhages

• Exophthalmia

• Abdominal swelling