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How to Identify and Classify Tetras
Contributed by: Wallis
  • 1. What is the defining characteristic of the Characidae family, to which tetras belong?
A) Caudal fin stripes
B) Adipose fin
C) Large scales
D) Barbels
  • 2. Which tetra is known for its bright red stripe from gills to tail?
A) Neon Tetra
B) Ember Tetra
C) Cardinal Tetra
D) Black Skirt Tetra
  • 3. What body shape is commonly seen in the Black Skirt Tetra?
A) Torpedo shape
B) Round shape
C) Diamond shape
D) Cylindrical shape
  • 4. Which tetra exhibits a shimmering orange-red coloration?
A) Ember Tetra
B) Glowlight Tetra
C) Lemon Tetra
D) Flame Tetra
  • 5. What distinctive marking is present on the head of the Head and Tail Light Tetra?
A) A red spot
B) Two bright spots
C) No markings
D) A dark stripe
  • 6. The Lemon Tetra is best identified by its...
A) Red eyes
B) Black stripe
C) Yellow body color
D) Blue shimmer
  • 7. Which tetra is known for its peaceful nature and schooling behavior?
A) Serpae Tetra
B) Buenos Aires Tetra
C) Neon Tetra
D) Pristella Tetra
  • 8. What type of diet is generally suitable for most tetra species?
A) Herbivorous
B) Piscivorous
C) Omnivorous
D) Carnivorous
  • 9. What is the ideal water temperature range for most tetra species?
A) 85-95°F
B) 50-60°F
C) 60-70°F
D) 72-82°F
  • 10. Which tetra species is known for its fin-nipping tendencies?
A) Serpae Tetra
B) Neon Tetra
C) Glowlight Tetra
D) Cardinal Tetra
  • 11. What type of environment do tetras typically prefer in an aquarium?
A) Saltwater tank
B) Planted tank
C) Bare tank
D) Brackish tank
  • 12. What water parameter is crucial for tetra health?
A) Hard, alkaline water
B) Saltwater
C) Brackish water
D) Soft, acidic water
  • 13. Which tetra has a transparent body and distinct black and yellow stripes?
A) Bleeding Heart Tetra
B) Penguin Tetra
C) X-Ray Tetra
D) Pristella Tetra
  • 14. What unique swimming behavior is seen in Penguin Tetras?
A) Resting on the bottom
B) Swimming in circles
C) Head-up angle
D) Rapid darting
  • 15. The Diamond Tetra is known for its...
A) Red fins
B) Black spots
C) Blue stripe
D) Shimmering scales
  • 16. Which tetra displays a heart-shaped red marking on its body?
A) Ruby Tetra
B) Glowlight Tetra
C) Flame Tetra
D) Bleeding Heart Tetra
  • 17. What type of lighting is generally recommended for tetras?
A) Dim lighting
B) Infrared lighting
C) UV lighting
D) Bright lighting
  • 18. Which tetra can tolerate slightly cooler water temperatures than most others?
A) Neon Tetra
B) Buenos Aires Tetra
C) Cardinal Tetra
D) Ember Tetra
  • 19. What is the minimum recommended tank size for a school of tetras?
A) 2.5 gallons
B) 5 gallons
C) 20 gallons
D) 10 gallons
  • 20. Which tetra is named for its distinctive glow?
A) Cardinal Tetra
B) Glowlight Tetra
C) Ember Tetra
D) Neon Tetra
  • 21. What is the purpose of tannins in the water for some tetra species?
A) Mimic natural habitat
B) Increase oxygen levels
C) Raise pH
D) Add nutrients
  • 22. Which is NOT a common tetra disease?
A) Ich
B) Ichthyophthirius multifiliis in saltwater fish
C) Neon Tetra Disease
D) Fin Rot
  • 23. What feature is often used to distinguish between male and female tetras?
A) Eye size
B) Body shape
C) Fin length
D) Color intensity
  • 24. What is the typical lifespan of most tetra species in captivity?
A) 10-15 years
B) 1-2 years
C) 3-8 years
D) 20+ years
  • 25. What is the scientific name for the Neon Tetra?
A) Paracheirodon innesi
B) Hyphessobrycon eques
C) Hemigrammus erythrozonus
D) Moenkhausia pittieri
  • 26. Which tetra is known for its active schooling behavior and hardiness?
A) Glowlight Tetra
B) Black Skirt Tetra
C) Cardinal Tetra
D) Ember Tetra
  • 27. What type of food is best for newly hatched tetra fry?
A) Infusoria
B) Brine shrimp
C) Flake food
D) Bloodworms
  • 28. Which tetra gets its name from a South American river?
A) Rio Negro Tetra
B) Orinoco Tetra
C) Para Tetra
D) Amazon Tetra
  • 29. What is a key factor in preventing Neon Tetra Disease?
A) Good water quality
B) Bright lighting
C) Overfeeding
D) High temperature
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