How to Identify and Classify Swordtails
  • 1. What is the defining characteristic of male swordtails?
A) A rounded dorsal fin
B) Larger body size
C) An elongated lower caudal fin ray
D) Bright orange coloration
  • 2. Swordtails belong to which family of fish?
A) Cyprinidae
B) Poeciliidae
C) Characidae
D) Cichlidae
  • 3. What type of reproduction do swordtails exhibit?
A) Livebearing
B) Egg-scattering
C) Mouthbrooding
D) Egg-laying
  • 4. The 'sword' in swordtails is actually part of the:
A) Caudal fin
B) Dorsal fin
C) Pectoral fin
D) Anal fin
  • 5. What is the scientific name for the common green swordtail?
A) Carassius auratus
B) Xiphophorus hellerii
C) Betta splendens
D) Poecilia reticulata
  • 6. Which swordtail variety is characterized by a black body and red dorsal fin?
A) Pineapple
B) Lyretail
C) Nigrocaudatus
D) Kohaku
  • 7. What is the base coloration of the 'Pineapple' swordtail?
A) Blue
B) Yellow
C) Red
D) Black
  • 8. Which of these is NOT a common color variation in swordtails?
A) Red
B) Green
C) Lavender
D) Orange
  • 9. What is the typical lifespan of a swordtail in captivity?
A) 10+ years
B) 6-8 years
C) 1-2 years
D) 3-5 years
  • 10. What type of environment do Swordtails originate from?
A) Brackish Water
B) Freshwater
C) Frozen Water
D) Saltwater
  • 11. What does 'Xiphophorus' refer to?
A) Colorful-fin
B) Peaceful fish
C) Live-bearing
D) Sword-bearing
  • 12. What is a common disease that affects swordtails?
A) Dropsy
B) Tuberculosis
C) Swim Bladder Disease
D) Ich
  • 13. How can you differentiate between a male and female juvenile swordtail before the sword develops?
A) The color intensity
B) The anal fin shape
C) The overall size
D) Their swimming pattern
  • 14. What is the ideal water temperature for swordtails?
A) 68-82°F (20-28°C)
B) 50-60°F (10-15°C)
C) 85-95°F (29-35°C)
D) 32-40°F (0-4°C)
  • 15. What is a 'Simpson' swordtail?
A) A sterile swordtail
B) A swordtail crossbred with a guppy
C) A type of swordtail with distinct fin shapes and patterns
D) A swordtail with an abnormally short sword
  • 16. Which food is best for swordtails?
A) Algae wafers
B) Meat
C) Flake food
D) Granules
  • 17. What pH level is ideal for swordtails?
A) 7.0-8.0
B) 6.0-7.0
C) 5.0-6.0
D) 8.0-9.0
  • 18. What is the function of the gonopodium in male swordtails?
A) Defense
B) Reproduction
C) Digestion
D) Respiration
  • 19. What does 'Albino' indicate in a swordtail's coloration?
A) Metallic sheen
B) Lack of pigmentation
C) High pigmentation
D) Iridescent scales
  • 20. Which of the following is a common behavior of swordtails?
A) Schooling in smaller groups
B) Burying themselves in the substrate
C) Laying eggs on plants
D) Building nests
  • 21. What is a key consideration when breeding swordtails?
A) Feeding them only live food
B) Separating males and females continuously
C) Keeping the water very acidic
D) Providing ample hiding places for fry
  • 22. What is a 'high-fin' swordtail characterized by?
A) Missing caudal fin
B) Extra-long pectoral fins
C) An unusually long sword
D) An enlarged dorsal fin
  • 23. What is a sign of stress in swordtails?
A) Active swimming
B) Clamped fins
C) Aggressive behavior towards other fish
D) Bright coloration
  • 24. Which fish family are the swordtails closely related to?
A) Tetras
B) Platies
C) Goldfish
D) Koi
  • 25. What do swordtails mainly eat?
A) Algae and small invertebrates
B) Other fish
C) Large insects
D) Fruit
  • 26. How often should you change the water?
A) Daily 50% water change
B) Monthly 25% water change
C) Weekly 25% water change
D) Never
  • 27. Which vitamin can you supplement with to increase growth and health?
A) Vitamin B
B) Vitamin A
C) Vitamin D
D) Vitamin C
  • 28. At what age can swordtails start to breed?
A) 10-12 Months
B) 6-7 Months
C) 3-4 Months
D) 1-2 Months
  • 29. Are swordtails good community fish?
A) No
B) Only with big fish
C) Yes
D) Only with other swordtails
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