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How to Care for Angelfishes - Exam
Contributed by: Sandhu
  • 1. What is the minimum recommended tank size for a pair of adult angelfish?
A) 20 gallons
B) 30 gallons
C) 40 gallons
D) 55 gallons
  • 2. What is the ideal temperature range for angelfish?
A) 68-72°F
B) 78-84°F
C) 72-76°F
D) 85-90°F
  • 3. What type of water is best for angelfish?
A) Saltwater
B) Hard, alkaline water
C) Soft, slightly acidic water
D) Brackish water
  • 4. What is a common sign of stress in angelfish?
A) Vibrant colors
B) Aggressive behavior
C) Clamped fins
D) Constant eating
  • 5. Which of the following is a good source of protein for angelfish?
A) Lettuce
B) Gravel
C) Driftwood
D) Bloodworms
  • 6. How often should you perform water changes in an angelfish tank?
A) Only when cloudy
B) Weekly
C) Every other day
D) Monthly
  • 7. What is the ideal pH range for angelfish?
A) 7.5 - 8.5
B) 5.0 - 5.5
C) 6.0 - 7.0
D) 8.5 - 9.5
  • 8. What type of filtration is recommended for angelfish?
A) A combination of mechanical, chemical, and biological
B) Only mechanical
C) Only biological
D) Only chemical
  • 9. What is a common disease that affects angelfish?
A) Fin rot
B) Swim bladder disease
C) Dropsy
D) Ich
  • 10. What should you do if you suspect your angelfish has Ich?
A) Add salt to the tank
B) Ignore it and hope it goes away
C) Increase the water temperature and treat with medication
D) Flush the fish
  • 11. Angelfish are generally considered to be what type of fish?
A) Peaceful
B) Semi-aggressive
C) Herbivores
D) Aggressive
  • 12. What type of decor should be avoided in an angelfish tank?
A) Driftwood
B) Live plants
C) Sharp decorations
D) Smooth rocks
  • 13. What is a good way to acclimate angelfish to a new tank?
A) Float the bag in the tank for 15-30 minutes
B) Immediately release them into the tank
C) Pour the bag water directly into the tank
D) Rinse the fish under tap water
  • 14. What does 'aquascaping' mean?
A) Arranging aquarium decorations
B) Measuring the water parameters
C) Cleaning the aquarium
D) Feeding the fish
  • 15. What is the purpose of a quarantine tank?
A) To breed angelfish
B) To use as a sump
C) To isolate new fish to observe for disease
D) To store extra decorations
  • 16. How can you tell if angelfish are breeding?
A) They will start fighting
B) They will hide all the time
C) They will clean a flat surface and lay eggs
D) They will lose their color
  • 17. What do angelfish eggs look like?
A) Large, white spheres
B) Black strands
C) Green algae
D) Small, amber-colored dots
  • 18. How long does it take for angelfish eggs to hatch?
A) 1 day
B) 1 week
C) 1 month
D) 2-3 days
  • 19. What do newly hatched angelfish fry eat?
A) Bloodworms
B) Gravel
C) Infusoria or microworms
D) Flake food
  • 20. What is the scientific name for the angelfish?
A) Betta splendens
B) Poecilia reticulata
C) Pterophyllum scalare
D) Carassius auratus
  • 21. Which fish is generally NOT a good tank mate for angelfish?
A) Corydoras catfish
B) Swordtails
C) Small, slow-moving fish like neon tetras
D) Plecos
  • 22. What is the purpose of activated carbon in a filter?
A) Removes impurities and odors
B) Traps large debris
C) Lowers the pH
D) Adds beneficial bacteria
  • 23. What is the benefit of using live plants in an angelfish tank?
A) They release harmful toxins
B) They make the water cloudy
C) They help oxygenate the water and provide hiding places
D) They increase the pH
  • 24. What does the term 'cycling' a tank mean?
A) Establishing beneficial bacteria
B) Adding fish
C) Changing the water
D) Turning on the filter
  • 25. What are some common varieties of angelfish?
A) Siamese fighter, Molly, Corydora
B) Koi, Veil tail, Marble
C) Oscar, Cichlid, Catfish
D) Goldfish, Guppy, Pleco
  • 26. What does the term 'bioload' refer to?
A) The amount of waste produced in the tank
B) The number of decorations
C) The size of the tank
D) The type of filter used
  • 27. What is a water conditioner used for?
A) To lower the water temperature
B) To add algae to the tank
C) To add salt to the water
D) To remove chlorine and chloramine from tap water
  • 28. Why is it important to have a secure lid on an angelfish tank?
A) To keep the water warm
B) To prevent them from jumping out
C) To keep other fish from getting in
D) To block out sunlight
  • 29. What is a symptom of a Nitrate Poisoning?
A) Breeding behavior
B) Rapid Growth
C) Gasping at the surface
D) Clear Eyes
  • 30. What is a method to lower the nitrate level in your angelfish tank?
A) Perform a water change
B) Increase feeding
C) Add more fish
D) Remove the filter
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