How to Raise Danios
  • 1. What is the recommended minimum tank size for a school of Danios?
A) 10 gallons
B) 5 gallons
C) 20 gallons
D) 2.5 gallons
  • 2. Danios are known for being which type of fish?
A) Bottom dwellers
B) Predatory
C) Territorial
D) Active swimmers
  • 3. What is the ideal water temperature range for Danios?
A) 80-85°F (27-29°C)
B) 68-78°F (20-26°C)
C) 60-65°F (15-18°C)
D) 85-90°F (29-32°C)
  • 4. What type of food is best for Danios?
A) Omnivore flakes or pellets
B) Algae wafers
C) Live plants
D) Carnivore pellets
  • 5. How many Danios should you keep in a school at a minimum?
A) 4
B) 2
C) 10
D) 6
  • 6. What is the average lifespan of a Danio?
A) 1 year
B) 6 months
C) 10 years
D) 3-5 years
  • 7. What is the ideal pH level for a Danio tank?
A) 9.0-10.0
B) 5.0-6.0
C) 6.5-7.5
D) 8.0-9.0
  • 8. What is the most common cause of death in Danios?
A) Aggression from other fish
B) Old age
C) Overfeeding
D) Poor water quality
  • 9. Are Danios egg-layers or livebearers?
A) Livebearers
B) Egg-layers
C) Egg-scatterers
D) Mouthbrooders
  • 10. What is the scientific name of the Zebra Danio?
A) Betta splendens
B) Poecilia reticulata
C) Carassius auratus
D) Danio rerio
  • 11. Danios are generally considered to be...
A) Territorial fish
B) Peaceful fish
C) Fin-nipping fish
D) Aggressive fish
  • 12. What type of filtration is recommended for a Danio tank?
A) A filter suitable for the tank size
B) Only an air stone
C) No filtration needed
D) A filter twice the size of the tank
  • 13. How often should you perform water changes in a Danio tank?
A) 25% weekly
B) Never
C) 50% daily
D) 10% monthly
  • 14. What is a common symptom of Ich in Danios?
A) White spots on the body
B) Cloudy eyes
C) Bloated abdomen
D) Frayed fins
  • 15. What type of decorations do Danios enjoy?
A) Large aggressive tankmates
B) Sharp rocks and coral
C) Plants and smooth rocks
D) Empty tank
  • 16. What should you do before adding new Danios to an established tank?
A) Float the bag for 5 minutes
B) Quarantine them
C) Mix the water from both tanks
D) Add them immediately
  • 17. What are Danios sensitive to in aquarium water?
A) Calcium and Magnesium
B) Oxygen and Carbon Dioxide
C) Chlorine and Chloramine
D) Ammonia and Nitrites
  • 18. What kind of lighting is best for Danios?
A) Very bright lighting
B) Moderate lighting
C) No lighting
D) UV lighting
  • 19. What is the best way to feed Danios?
A) One large feeding a day
B) Small portions twice a day
C) Leave food in the tank constantly
D) Feed only once a week
  • 20. Danios are native to which continent?
A) South America
B) North America
C) Africa
D) Asia
  • 21. Which of these is NOT a common type of Danio?
A) Leopard Danio
B) Giant Danio
C) Rainbow Danio
D) Zebra Danio
  • 22. What does 'dimorphism' refer to in Danios?
A) The ability to change color
B) Their schooling behavior
C) The ability to breathe air
D) Visual differences between males and females
  • 23. How can you tell the difference between male and female Danios?
A) Males have longer fins
B) Males are always larger
C) Females have brighter colors
D) Females are usually rounder
  • 24. What is the primary function of aquarium salt for Danios?
A) Lowers the pH of the water
B) Removes chlorine from the water
C) Provides essential nutrients
D) Helps with osmoregulation and parasite control
  • 25. What is the meaning of the 'cycle' process in aquarium keeping?
A) Adjusting the pH
B) Establishing beneficial bacteria
C) Changing the water
D) Adding decorations
  • 26. Which plant is generally NOT recommended for a Danio tank due to its high light demands?
A) Java Fern
B) Alternanthera Reineckii
C) Anubias
D) Java Moss
  • 27. What should you do if you notice bullying behavior among your Danios?
A) Increase school size and add more hiding places
B) Isolate the bully
C) Ignore the behavior; it will resolve itself
D) Remove the bullied fish
  • 28. What is a common substrate used in aquariums for Danios?
A) Concrete
B) Gravel
C) Sand
D) Soil
  • 29. What does 'nitrate' accumulation signify in a Danio tank?
A) A dangerous level of ammonia
B) A lack of oxygen
C) Ideal water parameters
D) The end product of the nitrogen cycle
  • 30. Why is it important to avoid overfeeding Danios?
A) They will become aggressive
B) They will grow too large
C) It can lead to poor water quality and health issues
D) They will lose their color
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