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