Shrimp: Caridina & Neocaridina Shrimp

Caridina and Neocaridina are both genera of freshwater shrimp, popular in the aquarium hobby for their colorful appearance and beneficial roles in maintaining aquarium ecosystems. Despite their similarities, there are some key differences between the two.

Neocaridina Shrimp

  • Common Species: The most well-known species is Neocaridina davidi, commonly known as the Cherry Shrimp.
  • Size: Typically smaller, ranging from about 1 to 1.5 inches (2.5 to 3.8 cm).
  • Hardiness: Neocaridina shrimp are generally more adaptable and tolerant of a range of water conditions, including slightly less stable water parameters.
  • Color Variety: Neocaridina species come in a variety of bright colors, such as red, yellow, blue, green, and even black. The Cherry Shrimp, in particular, is famous for its vibrant red color, but selective breeding has produced a wide range of color morphs.
  • Breeding: Neocaridina shrimp can breed in a variety of conditions. They do not require brackish water for breeding and are relatively easy to breed in a freshwater aquarium.
  • Water Conditions: They do best in stable, slightly alkaline to neutral pH (around 6.5–8.0), and prefer temperatures between 64°F and 80°F (18°C - 27°C).
  • Lifespan: Typically around 1–2 years.

Caridina Shrimp

  • Common Species: A well-known species is Caridina cantonensis, which includes varieties like the Crystal Red Shrimp and Tiger Shrimp.
  • Size: Generally slightly smaller than Neocaridina, with many species staying under 1 inch (2.5 cm).
  • Hardiness: Caridina shrimp are generally less tolerant of fluctuations in water conditions and require more stable water parameters compared to Neocaridina. They are often more sensitive to poor water quality.
  • Color Variety: Caridina species, especially Crystal Red Shrimp, are known for their high-contrast colors, often white and red or other striking combinations. They can also come in variations like the Bee Shrimp and Tiger Shrimp.
  • Breeding: Caridina species typically require specific water parameters (such as soft, acidic water with a lower pH) for successful breeding. Many Caridina shrimp require brackish water to breed, depending on the species.
  • Water Conditions: They thrive in soft, slightly acidic to neutral water (pH 5.8–7.5) and prefer temperatures between 68°F and 75°F (20°C - 24°C).
  • Lifespan: Caridina shrimp can live around 1–2 years, though their lifespan can be shorter in less-than-ideal conditions.

Key Differences Between Neocaridina and Caridina Shrimp

  1. Water Conditions:

    • Neocaridina: More tolerant of a wide range of water parameters, including harder and more alkaline water.
    • Caridina: Require softer, more acidic water, and are more sensitive to water changes.

  2. Breeding Requirements:

    • Neocaridina: Can breed easily in freshwater and do not require brackish conditions.
    • Caridina: Some species require brackish water for breeding, while others need very specific water conditions.

  3. Hardiness:

    • Neocaridina: Generally more robust and adaptable to changes in water quality and temperature.
    • Caridina: More delicate, requiring stable and specific water conditions to thrive.

  4. Color Varieties:

    • Neocaridina: Offers a broader range of bright, vibrant colors, including red, yellow, blue, and green.
    • Caridina: Known for their striking patterns and high-contrast colors, including white, red, and black.

  5. Size:

    • Neocaridina: Tend to be slightly larger and more active than Caridina shrimp.
    • Caridina: Generally smaller and more delicate in appearance.

Care Tips for Both Types of Shrimp:

  • Water Quality: Regular water changes are essential to maintain the health of both types of shrimp, but especially for Caridina, which are more sensitive to water fluctuations.
  • Feeding: Both types of shrimp are omnivores and scavengers, feeding on algae, detritus, biofilm, and shrimp pellets.
  • Tankmates: Both Neocaridina and Caridina shrimp are peaceful and can be kept with small, non-aggressive fish. However, it's best to avoid larger, predatory species.
  • Aquascaping: Both types of shrimp benefit from a well-planted tank with plenty of hiding spots. Live plants help maintain water quality and provide biofilm for the shrimp to graze on.

In conclusion, Neocaridina shrimp are easier to care for and breed, making them great for beginners, while Caridina shrimp are suited for more experienced hobbyists who can maintain the stable, specific conditions they need.