How to Raise Catfishes
  • 1. What is the ideal water temperature for catfish farming?
A) 5-10°C
B) 10-15°C
C) 35-40°C
D) 26-30°C
  • 2. Which of these is a common catfish species used in aquaculture?
A) Oncorhynchus mykiss
B) Cyprinus carpio
C) Salmo salar
D) Clarias gariepinus
  • 3. What is the recommended stocking density for catfish in ponds?
A) 100+ fish/m²
B) 50-60 fish/m²
C) 20-30 fish/m²
D) 5-10 fish/m²
  • 4. What is the primary food source for catfish in intensive farming?
A) Algae
B) Detritus
C) Commercial feed
D) Zooplankton
  • 5. What is the approximate protein requirement in catfish feed?
A) 5-10%
B) 40-45%
C) 10-15%
D) 28-32%
  • 6. Which water quality parameter is crucial to monitor in catfish ponds?
A) Dissolved oxygen
B) Water clarity
C) Temperature
D) pH
  • 7. What is the recommended pH range for catfish farming?
A) 9.0-10.0
B) 2.0-3.0
C) 4.0-5.0
D) 6.5-8.5
  • 8. Which of the following is a common disease affecting catfish?
A) Tuberculosis
B) Ichthyophthirius
C) Saprolignia
D) Columnaris
  • 9. What is a common method for preventing diseases in catfish farming?
A) Overfeeding
B) Water quality management
C) Ignoring water parameters
D) High stocking density
  • 10. How often should catfish ponds be fertilized?
A) Depending on nutrient levels
B) Daily
C) Never
D) Weekly
  • 11. What is the purpose of aeration in catfish ponds?
A) Increase dissolved oxygen
B) Reduce water temperature
C) Remove algae
D) Decrease pH
  • 12. What is the typical harvest size for catfish?
A) 2-3 kg
B) 0.5-1 kg
C) 5+ kg
D) 0.1-0.2 kg
  • 13. What is the most common method of harvesting catfish?
A) Dynamite fishing
B) Electrofishing
C) Hook and line
D) Seine netting
  • 14. What type of pond is generally recommended for catfish farming?
A) Glass pond
B) Plastic pond
C) Concrete pond
D) Earthen pond
  • 15. What is the importance of pond preparation before stocking?
A) Attracts predators
B) Increases algae growth
C) Removes predators and competitors
D) Decreases water quality
  • 16. What is the role of probiotics in catfish farming?
A) Kill bacteria
B) Increase water turbidity
C) Reduce oxygen levels
D) Improve gut health
  • 17. Why is water exchange important in catfish ponds?
A) Maintains water quality
B) Increases disease outbreaks
C) Decreases fish growth
D) Reduces feed efficiency
  • 18. What is the effect of high ammonia levels in catfish ponds?
A) Beneficial for growth
B) Toxic to fish
C) Reduces algae blooms
D) Increases oxygen levels
  • 19. What is the ideal depth for a catfish pond?
A) 0.5 meters
B) 3+ meters
C) 1-1.5 meters
D) 2.5 meters
  • 20. What is the purpose of liming catfish ponds?
A) Increase salinity
B) Adjust pH
C) Remove algae
D) Decrease oxygen
  • 21. What is the advantage of using formulated feed?
A) Less water pollution
B) Slower growth
C) Lower cost
D) Balanced nutrition
  • 22. How can you manage aquatic weeds in catfish ponds?
A) Decreasing water depth
B) Adding fertilizer
C) Manual removal
D) Increasing fish density
  • 23. What is the purpose of a feed trial?
A) Increase mortality
B) Determine the best feed
C) Reduce growth rate
D) Lower water quality
  • 24. What should be monitored during a feed trial?
A) Soil type
B) Air temperature
C) Cloud cover
D) Growth rate
  • 25. What is the optimal feeding frequency for juvenile catfish?
A) Once a day
B) Only at night
C) Once a week
D) 3-4 times per day
  • 26. What is a common sign of oxygen depletion in a catfish pond?
A) Fish swimming actively
B) Algae bloom
C) Clear water
D) Fish gasping at the surface
  • 27. What is the importance of biosecurity in catfish farming?
A) Increase production costs
B) Promote algae growth
C) Reduce fish growth
D) Prevent disease introduction
  • 28. What is the purpose of grading catfish?
A) Reduce growth rate
B) Separate fish by size
C) Increase disease transmission
D) Promote cannibalism
  • 29. What is a common method for controlling snails in catfish ponds?
A) Biological control
B) Reducing aeration
C) Adding sugar
D) Increasing water depth
  • 30. What is the benefit of integrated fish farming?
A) Higher input costs
B) Increased pollution
C) Resource recycling
D) Reduced productivity
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