Red Rili Shrimp: A Unique and Colorful Shrimp for Your Aquarium

Characteristics

The Red Rili Shrimp is a striking freshwater shrimp variety known for its vivid red markings contrasted by translucent or white body patches. As a selectively bred Neocaridina davidi variant, it shares the hardiness and adaptability of its relatives, making it an excellent choice for both beginners and experienced shrimp keepers.

• Scientific Name: Neocaridina davidi (Red Rili variant)
• Natural Habitat: Originally from Taiwan, but this color variant is selectively bred
• Behavior: Peaceful, active, and social
• Tank Size: Minimum 5 gallons for a small colony
• Ideal Water Parameters:
  • pH: 6.5 – 7.5
  • Hardness: 4 – 12 dGH
  • Temperature: 68 – 78°F (20 – 26°C)
• Care Level: Easy

Origin and Distribution

The Red Rili Shrimp does not exist in the wild, as it is a selectively bred variety of Neocaridina davidi. However, its ancestors originate from Taiwan’s freshwater streams, where shrimp thrive in mineral-rich, slow-moving waters with dense vegetation. This breeding process has resulted in a stunning pattern while maintaining the species’ resilience.

Colors and Markings

One of the most distinctive features of the Red Rili Shrimp is its patchy red coloration, with clear or white sections along its body. The intensity of red varies among individuals, with some showing deep crimson hues, while others have lighter orange-red tones.

• Head and Tail: Usually bright red
• Midsection: Translucent or white, creating the “Rili” effect
• Legs and Antennae: Often red or transparent, depending on genetics

This shrimp’s unique pattern makes it highly sought after by aquarists who want a colorful and dynamic addition to their tanks.

Tankmates

Being peaceful and non-aggressive, the Red Rili Shrimp thrives in shrimp-only tanks or community aquariums with small, non-predatory fish. Ideal tankmates include:

• Nano Fish: Ember Tetra, Chili Rasbora, Green Neon Tetra
• Other Shrimp Species: Blue Dream, Orange Sakura, Yellow Shrimp (avoid interbreeding within Neocaridina species to maintain pure colors)
• Snails: Nerite Snails, Mystery Snails
• Small Corydoras: Pygmy Corydoras, Dwarf Corydoras

Avoid keeping them with large, aggressive fish, such as cichlids, bettas, or predatory species that might eat shrimp.

Care Requirements

The Red Rili Shrimp is relatively low-maintenance and thrives in a well-cycled aquarium with stable water parameters.

• Filtration: Sponge filters are ideal, preventing baby shrimp from being sucked in.
• Lighting: Moderate lighting enhances algae growth for natural grazing.
• Substrate: Dark substrates make their red coloration stand out.
• Aquascaping: Provide driftwood, mosses (Java Moss, Christmas Moss), and hiding spots to ensure comfort.
• Water Quality: Perform weekly 10-20% water changes with dechlorinated water to maintain stable conditions.

Diet and Feeding

The Red Rili Shrimp is an omnivorous scavenger, feeding on biofilm, algae, and organic matter in the tank. Supplement their diet with:

• Shrimp Pellets: High-quality, calcium-rich pellets
• Blanched Vegetables: Zucchini, spinach, carrots
• Algae Wafers: Essential for plant-based nutrients
• Occasional Protein Treats: Frozen daphnia, bloodworms (in moderation)

Overfeeding can pollute the water, so always remove uneaten food after a few hours.

Gender Differences

Distinguishing males and females is relatively easy:

• Males: Smaller and slightly less vibrant
• Females: Larger, more intense red coloration, and “saddle” marking visible when carrying eggs

Breeding

Breeding Red Rili Shrimp is straightforward as long as they are kept in stable water conditions. Like other Neocaridina shrimp, they are easy breeders, making them great for shrimp colonies.

Breeding Process:

1. Stable water conditions encourage breeding.
2. Mature females develop a saddle (yellow/greenish patch) before carrying eggs.
3. After molting, females release pheromones, attracting males for fertilization.
4. Eggs hatch in about 3-4 weeks, with baby shrimp being fully independent.
5. Provide biofilm and powdered shrimp food for newborns to thrive.

With the right conditions, Red Rili Shrimp can reproduce continuously, creating a beautiful, self-sustaining colony.

Additional Resources

For more shrimp-keeping insights, check out:

• Beginner’s Guide to Neocaridina Shrimp
• Best Plants for Shrimp Tanks
• How to Maintain a Healthy Shrimp Colony

The Red Rili Shrimp is a stunning, hardy, and rewarding species, perfect for shrimp enthusiasts who want a unique color combination in their aquarium. Whether kept alone or in a community setup, their vibrant red and clear markings make them an eye-catching feature in any tank!