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