Basic Information You Must Know about Aquarium Crystal Shrimp

Basic Information You Must Know about Aquarium Crystal Shrimp

Crystal shrimp, scientifically known as Caridina cf. cantonensis, are a popular variety of ornamental freshwater shrimp in the aquarium hobby. They come in two main color variations:
  1. Crystal Red Shrimp (CRS)
  2. Crystal Black Shrimp (CBS)

Origin and Development

  • First discovered in 1993 by Hisayasu Suzuki in Japan
  • Selectively bred from wild Bee shrimp found in southern China, Hong Kong, and Taiwan
  • CRS were developed from a red mutation found among Crystal Black Shrimp

Physical Characteristics

  • Size: 1-1.5 inches (2.5-3.5 cm) in length
  • Lifespan: 1-2 years
  • CRS: Red and white coloration
  • CBS: Black and white coloration
  • Transparent body with colored stripes or patches

Grading System

Crystal shrimp are graded based on their color intensity and pattern:
  • Lowest grade: C
  • Intermediate grades: B, A, S
  • Highest grade: SS or SSS (also known as "Mosura" grade)
Higher grades have more opaque colors and better-defined patterns.

Care Requirements

  1. Water Parameters:
    • Temperature: 68-77°F (20-25°C)
    • pH: 6.0-6.5
    • GH: 5.5-7
    • KH: 0-2 (optimal 0-1)
    • TDS: 100-180 ppm
    • EC: 200-300 microsiemens
  2. Tank Setup:
    • Minimum tank size: 8 gallons (30 liters)
    • Planted aquarium with hiding spots
    • Soft, inert substrate (e.g., ADA Aquasoil)
  3. Diet:
    • Omnivorous
    • Feed on biofilm, algae, and commercial shrimp foods
    • Benefit from foods rich in carotenoids for color enhancement
  4. Breeding:
    • Can breed in captivity under proper conditions
    • Females carry eggs for about 30 days before hatching
    • Offspring may vary in grade and color intensity

Special Considerations

  • More sensitive to water conditions than many other shrimp species
  • Require stable water parameters due to selective breeding
  • Best kept in species-only tanks or with other non-aggressive inhabitants
  • Regular water changes and excellent filtration are essential
Crystal shrimp are considered more challenging to keep than some other freshwater shrimp species, making them better suited for experienced aquarists. Their striking appearance and the challenge of maintaining high-grade specimens make them highly sought after in the aquarium hobby.
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