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How to Raise Clownfishes - Test
Contributed by: Boyd
  • 1. What is the ideal water temperature for clownfish breeding?
A) 80-82°F (26.7-27.8°C)
B) 72-74°F (22.2-23.3°C)
C) 68-70°F (20-21.1°C)
D) 88-90°F (31.1-32.2°C)
  • 2. What is the optimal salinity for a clownfish breeding tank?
A) 1.020-1.021 specific gravity
B) 1.030-1.031 specific gravity
C) 1.015-1.016 specific gravity
D) 1.025-1.026 specific gravity
  • 3. What type of anemone is commonly hosted by Ocellaris Clownfish?
A) Entacmaea quadricolor (Bubble Tip Anemone)
B) Heteractis magnifica (Magnificent Anemone)
C) Stichodactyla gigantea (Giant Carpet Anemone)
D) Condylactis gigantea (Haitian Anemone)
  • 4. What is the typical clutch size for a pair of clownfish?
A) 50-100 eggs
B) 10-20 eggs
C) 300-700 eggs
D) 1000-1500 eggs
  • 5. How long does it take for clownfish eggs to hatch?
A) 15-20 days
B) 6-11 days
C) 30-45 days
D) 1-2 days
  • 6. What is the first food that clownfish larvae typically eat?
A) Copepods
B) Rotifers
C) Brine Shrimp
D) Flake Food
  • 7. What is the ideal photoperiod for raising clownfish larvae?
A) 12 hours of light
B) 16 hours of light
C) 24 hours of light
D) 8 hours of light
  • 8. How often should you feed clownfish larvae?
A) Multiple times per day
B) Once a day
C) Every other day
D) Once a week
  • 9. What water parameter is crucial to maintain during larval rearing?
A) High nitrate levels
B) Low salinity
C) High water quality (low ammonia and nitrite)
D) High phosphate levels
  • 10. When do clownfish larvae typically begin metamorphosis?
A) Around 60-70 days post hatch
B) Around 10-14 days post hatch
C) Around 30-40 days post hatch
D) Around 3-5 days post hatch
  • 11. What type of food can be introduced as clownfish larvae metamorphose?
A) Flake Food
B) Seaweed
C) Baby Brine Shrimp
D) Pellet Food
  • 12. What is the purpose of a 'grow-out' tank?
A) To quarantine sick fish.
B) To raise juvenile clownfish to a larger size.
C) To breed clownfish.
D) To display clownfish in a retail setting.
  • 13. What is the role of the female clownfish in a breeding pair?
A) Lays the eggs
B) Eats the eggs
C) Fertilizes the eggs
D) Guards the eggs only
  • 14. What is the role of the male clownfish in a breeding pair?
A) Eats the eggs
B) Lays the eggs
C) Fertilizes and guards the eggs
D) Only guards the eggs
  • 15. What is the typical lifespan of a clownfish in captivity?
A) 20-30 years
B) 5-10 years
C) 6 months
D) 1-2 years
  • 16. Why is it important to remove uneaten food from a larval tank?
A) To help the larvae find the food easier
B) To prevent water quality issues
C) To make the tank look cleaner
D) To conserve food
  • 17. What is 'velvet disease' caused by?
A) Poor water quality
B) A bacterial infection
C) A parasitic dinoflagellate
D) A fungal infection
  • 18. What is the benefit of using a sponge filter in a larval tank?
A) It adds oxygen to the water very quickly
B) It provides biological filtration without harming larvae
C) It removes all particles from the water
D) It heats the water
  • 19. What is the term for the process of acclimating clownfish to a new tank?
A) Aeration
B) Quarantine
C) Drip Acclimation
D) Osmosis
  • 20. Why are regular water changes important in a clownfish tank?
A) To increase salinity
B) To replenish trace elements and remove nitrates
C) To add more food
D) To lower the temperature
  • 21. What is the primary function of a protein skimmer?
A) Increase pH
B) Remove organic waste
C) Add oxygen
D) Reduce salinity
  • 22. What are common signs of stress in clownfish?
A) Erratic swimming, increased coloration, aggression towards tank mates
B) Lethargy, increased appetite, swimming at the top of the tank
C) Rapid breathing, hiding, loss of appetite
D) Increased activity, bright colors, increased appetite
  • 23. What is the purpose of a quarantine tank?
A) To observe and treat new fish before introducing them to the main tank
B) To grow algae for fish food
C) To store extra aquarium equipment
D) To breed fish in a controlled environment
  • 24. What is the potential impact of copper-based medications on invertebrates?
A) Highly toxic
B) Neutral
C) Slightly beneficial
D) Beneficial
  • 25. What is the ideal pH range for a clownfish tank?
A) 7.5-7.8
B) 8.5-9.0
C) 6.5-7.0
D) 8.1-8.4
  • 26. Which of the following is considered a peaceful tank mate for clownfish?
A) Triggerfish
B) Firefish Goby
C) Lionfish
D) Pufferfish
  • 27. What type of substrate is generally recommended for a clownfish tank?
A) Bare bottom
B) Crushed coral
C) Aragonite sand
D) Gravel
  • 28. What is the process of removing chlorine from tap water called?
A) Reverse osmosis
B) Dechlorination
C) Denitrification
D) Nitrification
  • 29. What is the primary cause of 'Ich' (white spot disease)?
A) Viral infection
B) Fungal infection
C) Parasitic protozoan
D) Bacterial infection
  • 30. What is the best practice when introducing a new anemone to a tank with clownfish?
A) Allow the anemone to settle before introducing the clownfish.
B) Immediately introduce the clownfish to encourage hosting.
C) Physically attach the clownfish to the anemone.
D) Place the anemone near the clownfish's favorite spot.
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