How to Raise Crabs - Test
  • 1. What is the ideal salinity level for crab rearing?
A) Fresh water
B) Brackish water
C) Salt water
D) Distilled water
  • 2. What is a common food source for juvenile crabs?
A) Brine shrimp
B) Sand
C) Gravel
D) Rocks
  • 3. What is a primary concern regarding crab habitats?
A) Color
B) Water quality
C) Lighting
D) Decorations
  • 4. What is the process of shedding an exoskeleton called?
A) Changing
B) Shedding
C) Molting
D) Growing
  • 5. Why is providing hiding places important for crabs?
A) Enhances color
B) Reduces stress
C) Increases appetite
D) Improves swimming
  • 6. What water parameter is important to monitor to avoid health issues?
A) Salt
B) Ammonia
C) Sugar
D) Flour
  • 7. How often should water changes typically be performed?
A) Never
B) Irregularly
C) Annually
D) Regularly
  • 8. What type of substrate is generally preferred for crab tanks?
A) Sand
B) Gravel
C) Concrete
D) Plastic
  • 9. Why is proper aeration important in a crab tank?
A) Oxygen supply
B) Carbon dioxide
C) Heat
D) Nitrogen
  • 10. What is a common sign of stress in crabs?
A) Eating more
B) Brighter color
C) Increased activity
D) Lethargy
  • 11. What is cannibalism a risk of, when raising crabs?
A) Overcrowding
B) Clean water
C) Bright light
D) Underfeeding
  • 12. What behavior is important to note during the molting process?
A) Remove old shell
B) Assist the crab
C) Do not disturb
D) Feed the crab
  • 13. What type of food is good for calcium intake?
A) Cuttlebone
B) Lettuce
C) Apples
D) Bread
  • 14. What is the ideal water temperature for most crab species?
A) Freezing
B) Very cold
C) Room temperature
D) Boiling
  • 15. What is a potential source of disease in a crab habitat?
A) Good filtration
B) Balanced diet
C) Poor hygiene
D) Clean substrate
  • 16. What is the best type of container for raising blue crabs?
A) Plastic bag
B) Aquarium
C) Metal bucket
D) Cardboard box
  • 17. What is an important aspect of a crab's diet for shell hardening after molting?
A) Protein
B) Fat
C) Calcium
D) Carbohydrates
  • 18. What is an indicator of healthy crab development?
A) Regular molting
B) Loss of color
C) No molting
D) Constant hiding
  • 19. What could too much sunlight in a crab tank cause?
A) Cleaner water
B) Faster growth
C) Algae bloom
D) Increased happiness
  • 20. Why should tap water always be treated before use in a crab tank?
A) Add sugar
B) Add ammonia
C) Increase pH
D) Remove chlorine
  • 21. What material is a good alternative to live plants in a crab tank?
A) Plastic plants
B) Glass beads
C) Cardboard cutouts
D) Metal sculptures
  • 22. What is an example of a live food you can feed crabs?
A) Rocks
B) Pasta
C) Bread
D) Bloodworms
  • 23. What is the purpose of using a filter in a crab tank?
A) Change water color
B) Add food
C) Remove waste
D) Heat the water
  • 24. What does the term 'berried' refer to in female crabs?
A) Eating algae
B) Hibernating
C) Carrying eggs
D) Molting
  • 25. What is important about the height of the water compared to available land space?
A) All water
B) Balance
C) All land
D) No need for balance
  • 26. Which element must be in the water for healthy crabs?
A) Chlorine
B) Fluorine
C) Bromine
D) Iodine
  • 27. What type of crab is typically not raised in brackish water?
A) Fiddler Crab
B) Spider Crab
C) Mangrove Crab
D) Hermit Crab
  • 28. What should a Crab's environment never have?
A) Brackish Water
B) Copper
C) Hiding Places
D) Sand
  • 29. What is a good source of protein to supplement your crabs diet?
A) Grains
B) Fish flakes
C) Fruits
D) Vegetables
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