Black Rili Shrimp: A Unique and Striking Freshwater Shrimp

Introduction

The Black Rili Shrimp (Neocaridina davidi var. “Black Rili”) is a stunning and highly sought-after freshwater shrimp known for its unique black and transparent body pattern. These shrimp are an excellent addition to planted aquariums and are popular among shrimp enthusiasts for their low-maintenance care and striking coloration.

Characteristics

• Scientific Name: Neocaridina davidi var. “Black Rili”
• Common Name: Black Rili Shrimp
• Family: Atyidae
• Size: 2.5–3 cm (1–1.2 inches)
• Lifespan: 1.5–2 years
• Behavior: Peaceful, social, active scavenger
• Care Level: Easy (beginner-friendly)

Origin and Distribution

Black Rili Shrimp are a selectively bred variant of the Neocaridina davidi species, originally native to Taiwan and China. In the wild, their ancestors thrive in slow-moving streams, ponds, and rice paddies with dense vegetation and rocky substrates.

Colors and Markings

The Black Rili Shrimp features a striking black and translucent pattern, creating a unique contrast that makes them highly desirable in aquascaped tanks. Some individuals may have deep black coloration with clear midsections, while others may show a lighter smoky black tone. The intensity of the black coloration depends on genetics, diet, and water parameters.

Tankmates

Being peaceful and non-aggressive, Black Rili Shrimp thrive in shrimp-only tanks or community tanks with small, non-aggressive fish. Ideal tankmates include:

✅ Other Neocaridina Shrimp (Cherry, Blue Dream, Yellow, etc.)
✅ Small Tetras (Neon, Ember, Cardinal)
✅ Rasboras (Chili Rasbora, Harlequin Rasbora)
✅ Otocinclus Catfish
✅ Corydoras (Dwarf varieties)
✅ Snails (Nerite, Mystery, Rabbit Snails)

🚫 Avoid large or aggressive fish like Cichlids, Betta fish, Angelfish, or Barbs, as they may prey on shrimp.

Care Requirements

To keep Black Rili Shrimp healthy, maintain stable water conditions:

• Tank Size: 10 gallons or more (for a stable colony)
• Water Temperature: 20–26°C (68–78°F)
• pH Level: 6.5–7.5
• Water Hardness: 4–12 dGH
• Ammonia & Nitrites: 0 ppm (Highly sensitive to poor water quality)
• Substrate: Dark sand or soil to enhance color contrast
• Plants & Hiding Spots: Java Moss, Anubias, Cholla Wood, Indian Almond Leaves for shelter and biofilm growth

🚨 Avoid copper-based medications in the tank, as copper is toxic to shrimp!

Diet and Feeding

Black Rili Shrimp are omnivorous scavengers, feeding on algae, biofilm, and detritus. To supplement their diet, provide:

• High-quality shrimp pellets (rich in minerals for molting)
• Blanched vegetables (spinach, zucchini, cucumber)
• Algae wafers
• Protein supplements (occasionally, like freeze-dried bloodworms)
• Indian Almond Leaves (promote beneficial biofilm growth)

Feed small amounts daily, ensuring no excess food remains in the tank to avoid water quality issues.