Crystal Red Shrimp

Crystal Red Shrimp (Caridina cf. cantonensis, also known as Crystal Red Shrimp or CRS) are one of the most iconic and sought-after selectively bred freshwater aquarium shrimp, famous for their stunning red-and-white striped or patterned appearance. Originating from selective breeding of wild bee shrimp in Taiwan, high-grade lines feature bold, vibrant crimson red bands contrasting sharply against a pure white or translucent body — creating a crystal-like, jewel-toned effect that dazzles in planted tanks.

Key Features & Appearance

• Coloration: Distinct red-and-white patterns; graded from C (basic) to SSSS (elite Pure Red Line/PRL) where the red dominates with minimal white interruptions and high opacity. Top grades show intense, solid red coverage with crisp white bands.
• Size: Adults typically 1–1.2 inches (2.5–3 cm); juveniles color up as they mature.
• Behavior: Peaceful, somewhat shy grazers that forage on biofilm, algae, detritus, and decaying matter — excellent for natural tank maintenance. They prefer groups (10+ for security and breeding) and are active but hide more than Neocaridina.
• Lifespan: 1–2 years with excellent care.

These sensitive Caridina require more precise conditions than hardy Neocaridina but reward dedicated keepers with breathtaking colonies and steady breeding.

Care Requirements

• Tank Size: 10+ gallons recommended; larger volumes stabilize parameters better for sensitive shrimp.
• Water Parameters (critical for success):
  • Temperature: 20–26°C (68–79°F); optimal 22–24°C — avoid extremes.
  • pH: 5.8–6.8 (acidic side preferred; RO water remineralized with bee shrimp salts).
  • GH: 4–6, KH: 0–2 (very soft, low carbonate hardness to prevent molting issues).
  • TDS: 120–180 ppm typical for high-grade lines.
• Setup Tips: Active substrate (e.g., buffering soils like ADA Amazonia) to maintain low pH, heavily planted with moss (Christmas/Java), botanicals (Indian almond leaves, alder cones), driftwood, and leaf litter for biofilm and hiding. Sponge filters or low-flow setups protect shrimplets; no copper or harsh chemicals.
• Diet: Biofilm/algae primary; supplement sparingly with shrimp-specific foods, blanched veggies, or high-quality pellets — overfeeding crashes parameters fast.
• Compatibility: Best in shrimp-only or very peaceful nano tanks (e.g., with small rasboras, otos, or snails). Avoid aggressive fish, Neocaridina mixes (cross-breeding risks), or unstable setups.

Breeding: Females carry turquoise/blueish eggs/saddle, hatching 10–30+ shrimplets after 3–5 weeks. Stable, soft/acidic water and cover are key for fry survival.

At Valley Aquatics, Crystal Red Shrimp are a premium draw for serious planted-tank enthusiasts in Abbotsford — their crystal-clear patterns make them a showpiece when paired with your botanicals!