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How to Identify and Classify Goldfishes
Contributed by: Wallis
  • 1. What is the most common type of goldfish?
A) Oranda goldfish
B) Bubble Eye goldfish
C) Fantail goldfish
D) Single-tailed goldfish
  • 2. What distinguishes fancy goldfish from common goldfish?
A) Brighter colors
B) Modified body shape and finnage
C) Larger size
D) Greater resistance to disease
  • 3. Which fin is NOT paired in a goldfish?
A) Anal fin
B) Pectoral fin
C) Dorsal fin
D) Pelvic fin
  • 4. What is the defining characteristic of a Ranchu goldfish?
A) Bubble-like sacs under the eyes
B) Lack of a dorsal fin and a warty headgrowth
C) Telescopic eyes
D) Long, flowing fins
  • 5. What type of tail does a Fantail goldfish possess?
A) Ribbon tail
B) Double tail
C) Single tail
D) Veil tail
  • 6. Which goldfish variety is known for its telescopic eyes?
A) Lionhead
B) Pearlscale
C) Comet
D) Black Moor
  • 7. What is the primary color of a Shukin goldfish?
A) Blue
B) Red and white
C) Orange
D) Black
  • 8. What is a characteristic feature of a Pearlscale goldfish?
A) A bumpy head
B) Raised scales that resemble pearls
C) Downward pointing eyes
D) A long, flowing tail
  • 9. Which goldfish is known for its bubbly sacs under its eyes?
A) Telescope Eye
B) Bubble Eye
C) Celestial Eye
D) Pom Pom
  • 10. What is the difference between a Lionhead and a Ranchu?
A) Ranchus have telescopic eyes, Lionheads do not
B) Lionheads have a more pronounced headgrowth, and a curved back whereas ranchus don't
C) Lionheads have a dorsal fin, Ranchus do not.
D) Lionheads are red, Ranchus are white
  • 11. What is the body shape of a Comet goldfish?
A) Discoid
B) Egg-shaped
C) Streamlined
D) Rounded
  • 12. The Celestial Eye goldfish has what distinctive feature?
A) Eyes that are very small
B) Eyes that bulge outwards
C) Eyes that point upwards
D) Eyes that point downwards
  • 13. What type of goldfish is most likely to be kept in ponds?
A) Bubble Eye goldfish
B) Ranchu goldfish
C) Pearlscale goldfish
D) Comet goldfish
  • 14. What feature defines an Oranda goldfish?
A) Bubbly sacs under its eyes
B) Telescopic eyes
C) A prominent headgrowth (wen)
D) Long flowing fins
  • 15. What does 'metallic' goldfish coloration refer to?
A) Dull and muted scales
B) Transparent scales
C) Shiny and reflective scales
D) Scales containing actual metal
  • 16. What type of diet do goldfishes have?
A) Piscivorous
B) Herbivorous
C) Omnivorous
D) Carnivorous
  • 17. What is the average lifespan of a well-cared-for goldfish?
A) 1-2 years
B) 20-30 years
C) 3-5 years
D) 10-15 years
  • 18. What type of water do goldfishes prefer?
A) Distilled Water
B) Brackish water
C) Saltwater
D) Freshwater
  • 19. What is the scientific name of the goldfish?
A) Poecilia reticulata
B) Carassius auratus
C) Betta splendens
D) Cyprinus carpio
  • 20. Which goldfish breed is thought to have originated in Japan?
A) Fantail
B) Comet
C) Ranchu
D) Black Moor
  • 21. What is the benefit of the dorsal fin on goldfish?
A) Provides stability
B) Increases oxygen intake
C) Attracts mates
D) Enhances speed
  • 22. What type of tail fin does a Veiltail goldfish have?
A) Short, stubby tail
B) Forked tail
C) Long, flowing tail
D) Rounded tail
  • 23. Which of these is NOT a common color variation in goldfish?
A) Green
B) Red
C) White
D) Orange
  • 24. What should be considered when evaluating the quality of a goldfish?
A) Swimming speed only
B) Body shape, finnage, and color
C) Appetite only
D) Size only
  • 25. What type of mutation led to fancy goldfish breeds?
A) Dietary changes
B) Genetic mutation
C) Environmental adaptation
D) Selective breeding only
  • 26. How does water temperature impact goldfish activity?
A) Lower temperatures increase activity.
B) Goldfish prefer extremely hot water
C) Temperature has no impact.
D) Lower temperatures decrease activity.
  • 27. Which disease is common to goldfish, due to poor water quality?
A) Fin Rot
B) Ich
C) Ammonia poisoning
D) Swim Bladder disorder
  • 28. How do you sex most goldfish?
A) DNA testing
B) By looking at the shape of their anal fins
C) By comparing their size - females are always larger
D) Observation of breeding tubercles on males during spawning season
  • 29. What is the term for when goldfish change color?
A) Pigment shifting
B) Metachrosis
C) Color morphing
D) Chromatic adaptation
  • 30. What is the origin of goldfish as a domesticated species?
A) China
B) Great Britain
C) Japan
D) United States
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