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