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