- 1. 1. Brining is the treatment of fish with __________.
A) Sun heat
B) micro wave
C) Smoke
D) salt
- 2. 2. A fish pond manager who needs to avoid cannibalism in his fish pond may do one of the following
A) Feeding
B) Vaccination
C) Sanitation
D) Grading
- 3. 3. Spawning is a fishery term that describes
A) Release of fries from fertilised eggs
B) Release of eggs at the sea shore
C) Brooding of eggs in the mouth
D) Release of eggs by the ovary
- 4. 4. It is a requirement to feed your fish beyond maintenance need. What would you do ensure this?
A) Serve the ration twice daily
B) Ensure a feed conversion ratio 1:2
C) Feed fish at a position
D) Serve 3% of total body weight of fish
- 5. 5. Shore ward migration of fishes involves movement from water to _______
A) Space
B) Water
C) Rock
D) land
- 6. 6. A feed conversion ratio of 1:2 is what percentage of feed to average body weight of fish?
A) 100%
B) 50%
C) 25%
D) 75%
- 7. 7. Passive movement of fishes is termed
A) Swimming
B) Dispersal
C) Schooling
D) Drifting
- 8. 8. One of these can be regarded a natural feed
A) Fish meal
B) Kitchen waste
C) Wheat offal
D) Water lettuce
- 9. 9. A type of feed usually associated with intensive fish production is
A) Complete
B) Natural
C) Artificial
D) Supplementary
- 10. 10. A method of fish processing involving slicing the flesh of fish parallel to its back bone is called
A) Filleting
B) Grating
C) Brining
D) Chopping
- 11. 11. Species as a factor of fish preference for natural feed refers to ________
A) Sex
B) Feeding habit
C) Size
D) Age
- 12. 12. On which of these occasions would you stop feeding your fish?
A) Before sorting
B) After transportation
C) During cannibalism
D) At market size
- 13. 13. Osmo regulatory migration is aimed at
A) Feeding
B) Length of day light
C) Spawning
D) Salt and water balance
- 14. 14. The practice of stocking same size of fish in a pond prevents all except
A) Inaccurate stocking
B) Feeding efficiency
C) Poor harvest
D) Predation
- 15. 15. Fishes that are newly introduced into the pond from the hatchery are made to swim freely into the pond to avoid
A) Stress
B) Canniballism
C) Aging
D) Sinking
- 16. 16. Which of these is a reason for mono sexual stocking of fish pond?
A) Predation
B) Accurate stocking
C) Controlled breeding
D) Genetic diversity
- 17. 17. The practice of cutting through fish abdomen to remove its viscera is
A) Deworming
B) Degutting
C) Disbudding
D) Flushing
- 18. 18. Ell is a good example of which migratory fish?
A) Anadromous
B) Vertical
C) Terrestial
D) Oceanodromous
- 19. 19. In order to initiate the growth of plankton in the pond, fish pond managers may adopt one of these
A) Blocking leakages
B) Regular harvest
C) Applying fertilizer
D) Pest control
- 20. 20. One of these does not lead to a reduced level of dissolved oxygen available to fish in the pond
A) Water current
B) Over crowding
C) Excess feed
D) Weed
- 21. 21. Genetic diversity as a significance of fish migration means that
A) young fishes possess genes that will not be inherited
B) there is the chance of mating between fishes with much distinct characters
C) fishes are prone to quick rearrangement of genes
D) the young ones of migratory fishes are widely dispersed
- 22. 22. An example of a potamodromous migratory fish is
A) Catfish
B) Tuna
C) Sword fish
D) Ell
- 23. 23. Why is a low water temperature a reason to stop feeding?
A) Fish become restless
B) Fish sink
C) Fish metabolism reduces
D) Flooding increases
- 24. 24. If 250 fish of average weight 400g are stocked in a monoculture pond, calculate their DFR
A) 3kg
B) 2kg
C) 4kg
D) 5kg
- 25. 25. The developmental stage of fish produced after hatching is
A) Fry
B) Fingerlin
C) Larva
D) Juvenile
- 26. 26. The range of temperature to which fish is exposed during hot smoking is between
A) 70°C - 80°C
B) 20°C - 30°C
C) 70°C - 80°C
- 27. 27. One of these is not a way of serving supplementary feed to fish
A) Dry
B) Life
C) Wet
D) Spread
- 28. 28. Mariculture as a fishery term describes raising of fish in the
A) Lake
B) River
C) Sea
D) Lagoon
- 29. 29. One of these water parameters is used to determine the quantity of natural feed available in a pond
A) Dissolved oxygen
B) Temperature
C) Volume
D) Transparency
- 30. 30. Acceptability of feed by livestock has to do with
A) Feeding habit
B) Texture
C) Health
D) Cost
- 31. 31. Amount of natural feed as a determinant in meeting the maintainance need of fish will prevent all but one
A) Feeding rate
B) Feed wastage
C) Insufficient dissolves oxygen
D) Water pollution
- 32. 32. All of these determines frequency of feeding except
A) Size of feed
B) Ageof fish
C) Water temperature
D) Cost of feed
- 33. 33. The two ways of distributing feed are _______ and positioning
A) Spreading
B) Life
C) Dry
D) Wet
- 34. 34. The factors determining fish migration include
A) Water current
B) Spicies
C) Age
D) Size
- 35. 35. A random locomotory movement of fishes is
A) Dispersal
B) Drifting
C) Latitudinal
D) Vertical
- 36. 36. One disadvantage of fish movement is
A) Obstacle
B) Protection
C) Genetic diversity
D) Osmoregulation
- 37. 37. Movement of fish from south pole to north pole and vice versa is
A) Climatic
B) Swimming
C) Latitudinal
D) Shoreward
- 38. 38. One diadromous migration of fishes is termed
A) Contrarheotaxis
B) Oceanodromy
C) Potamodromy
D) Catadromy
- 39. 39. Sorting describes
A) Grouping of fish by hygiene
B) Grouping of fish by sex
C) Grouping of fish by size
D) All kinds of grouping of fish
- 40. 40. There is the need to stop feeding your fish before stressing activities like sorting for all except one of these?
A) To avoid wastage
B) To prevent pollution
C) To avoid cannbalism
D) To prevent aggression
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