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How to Identify and Classify Rasboras
Contributed by: Wallis
  • 1. What is the most distinguishing feature generally used to identify Rasboras?
A) Scale count
B) Fin size
C) Body markings and patterns
D) Eye color
  • 2. Which body shape is common among Rasboras?
A) Torpedo-shaped
B) Disk-shaped
C) Eel-like
D) Box-shaped
  • 3. What type of fin is most useful for Rasbora classification?
A) Dorsal fin
B) Caudal fin
C) Pectoral fin
D) Lateral line or marking on their body
  • 4. What behavior is a strong clue when classifying Rasboras in a tank?
A) Bottom-dwelling behavior
B) Solitary behavior
C) Schooling behavior
D) Aggressive behavior
  • 5. What are the common color patterns seen in Rasboras?
A) Solid primary colors
B) Stripes, spots, and wedges
C) Swirls and curves
D) Polka dots and triangles
  • 6. What kind of water parameters should be considered when identifying Rasboras?
A) Alkaline water only
B) Their natural habitat's water conditions
C) Saltwater conditions
D) Tap water hardness
  • 7. What is the typical size range of most Rasbora species?
A) 8-10 inches
B) 1-3 inches
C) 5-7 inches
D) Over 12 inches
  • 8. Which marking is characteristic of the Harlequin Rasbora (Trigonostigma heteromorpha)?
A) A series of vertical stripes
B) Small, scattered spots
C) A bright red stripe
D) A large, triangular black marking
  • 9. Which of the following Rasboras is known for its bright orange coloration?
A) Lambchop Rasbora (Trigonostigma espei)
B) Scissortail Rasbora (Rasbora trilineata)
C) Glowlight Rasbora (Trigonostigma hengeli)
D) Espei Rasbora (Trigonostigma espei)
  • 10. What does 'Trigonostigma' refer to in the scientific name of some Rasboras?
A) A type of fin
B) A geographic location
C) A genus of Rasboras
D) A specific color pattern
  • 11. How does knowing the geographical origin of a Rasbora help with identification?
A) Narrows down the potential species based on range
B) Indicates its lifespan
C) Determines its diet
D) Changes its coloration
  • 12. What is the distinguishing feature of a Glowlight Rasbora (Trigonostigma hengeli)?
A) A black spot on the tail
B) A bright orange stripe
C) Bright blue eyes
D) Completely transparent fins
  • 13. The Scissortail Rasbora (Rasbora trilineata) is named for what?
A) Its tail fin shape
B) Its mouth shape
C) Its aggressive behavior
D) The pattern on its body
  • 14. What physical characteristic differentiates a male and female Rasbora?
A) Males have longer fins
B) Females are typically rounder.
C) Females have brighter colors
D) Males are larger
  • 15. What is the purpose of the 'lateral line' on a Rasbora?
A) Sensory organ for detecting vibrations
B) For respiration
C) For attracting mates
D) For camouflage
  • 16. Which fin is used for braking and precise movements?
A) Caudal fin
B) Pectoral fins
C) Dorsal fin
D) Anal fin
  • 17. What primary food source do Rasboras consume in the wild?
A) Large insects
B) Plant roots
C) Small invertebrates
D) Algae
  • 18. What is one important aspect to observe about the markings on a Rasbora's body?
A) Marking texture
B) Marking shape and position
C) Marking smell
D) Marking temperature
  • 19. How can you distinguish between similar-looking Rasbora species?
A) Comparing their swimming speed
B) Comparing the intensity of the colors
C) Comparing their eating habits
D) Comparing their sleeping patterns
  • 20. Which Rasbora is known for a black wedge and an orange body?
A) Lambchop Rasbora (Trigonostigma espei)
B) Glowlight Rasbora (Trigonostigma hengeli)
C) Emerald Eye Rasbora (Rasbora dorsiocellata)
D) Harlequin Rasbora (Trigonostigma heteromorpha)
  • 21. What is the general classification for the majority of rasbora species?
A) Saltwater fish
B) Amphibious fish
C) Brackish fish
D) Freshwater fish
  • 22. What should one consider when identifying color morphs within a Rasbora species?
A) Diet changes
B) Entirely different species
C) Variation within the specific species
D) Water pH
  • 23. What key factor affects a Rasbora's coloration?
A) Stress levels
B) Room temperature
C) Music played near the tank
D) The substrate used in the tank
  • 24. What is the most common mistake in identifying Rasboras?
A) Confusing similar species
B) Assuming all rasboras are the same size
C) Overlooking the lateral line
D) Ignoring the fins
  • 25. What is an important thing to know when identifying rasboras?
A) Their natural habitat
B) Their preferred temperature
C) Their ideal tank size
D) Their lifespan
  • 26. What is the relationship between Rasboras and their environments?
A) Can adapt to any environment
B) Prefers all types of environments equally
C) Unaffected by their environment
D) Specific to their environments
  • 27. What characteristic is unique to the Emerald Eye Rasbora (Rasbora dorsiocellata)?
A) Blue tail
B) Red markings
C) Yellow fins
D) Emerald green spot
  • 28. What is the purpose of scientific names (binomial nomenclature) in Rasbora identification?
A) To confuse hobbyists
B) To make the fish sound exotic
C) To simplify identification
D) To ensure unique identification
  • 29. What feature on the Rasbora fish is an indicator of its health?
A) Weight
B) Scale Density
C) Fin Size
D) Coloration
  • 30. What tool is most useful for observing minute markings for identification purposes?
A) Binoculars
B) Microscope
C) Telescope
D) Magnifying glass
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