🦐 General Overview

• Common Names: Red Orchid Sulawesi Shrimp, Sulawesi Red Orchid Shrimp

• Scientific Name: Caridina dennerli (or closely related Sulawesi Caridina species)

• Family: Atyidae

• Origin: Lake Matano and nearby lakes, Sulawesi Island, Indonesia

• Type: Freshwater ornamental shrimp

• Temperament: Very peaceful, delicate, and shy

🌊 Natural Habitat

• Native to the ancient Sulawesi lakes, known for their crystal-clear, mineral-rich, and warm waters.

• Found among rocks, caves, and algae-covered surfaces in stable, clean environments.

• The lakes are alkaline, with high oxygen and minimal organic waste — conditions that must be replicated in aquariums.

📏 Size and Lifespan

• Adult Size: 1–1.2 inches (2.5–3 cm)

• Lifespan: 1.5–2.5 years under ideal conditions

🏡 Aquarium Requirements

• Tank Size: Minimum 10–15 gallons for stability

• Aquascape: Use rocky setups, lava stones, and gentle mosses (avoid driftwood that lowers pH)

• Lighting: Moderate to bright — promotes algae growth

• Filtration: Sponge filter or low-flow filter to avoid strong currents

• Tank Lid: Recommended, to prevent evaporation and maintain humidity

💧 Water Parameters (Critical for Survival)

Sulawesi shrimp are very sensitive — they need stable, specific conditions.

• Temperature: 27–30°C (80–86°F)

• pH: 7.5–8.5 (alkaline)

• GH (General Hardness): 4–6 dGH

• KH (Carbonate Hardness): 3–5 dKH

• TDS: 150–200 ppm

• Oxygen: High; gentle aeration is essential

• Ammonia/Nitrite: Always 0 — extremely sensitive to toxins

💡 Use Sulawesi-specific remineralized RO water for best results.

🍽️ Diet

• Type: Omnivorous grazer

• Preferred Foods:

  • Biofilm and natural algae (primary food source)

  • Specialized Sulawesi shrimp foods

  • Blanched spinach or zucchini (occasional)

  • Spirulina-based shrimp pellets

• Feed lightly — overfeeding pollutes water quickly.

🤝 Behavior and Tankmates

• Peaceful and non-aggressive

• Best kept in species-only tanks — easily outcompeted by other shrimp or fish

• Compatible only with:

  • Snails from Sulawesi (e.g., Tylomelania species)

  • Possibly small algae grazers in similar conditions

• Avoid fish and other shrimp species that prefer different water parameters.

🌿 Breeding

• Type: True freshwater breeder (no larval stage)

• Females carry 15–25 eggs under their abdomen for about 3–4 weeks

• Baby shrimp are fully formed miniatures and graze on biofilm

• Breeding success depends on perfect stability in parameters and plentiful biofilm

• Avoid disturbing the tank during brooding

⚕️ Care Tips & Health

• Stability is the key — sudden temperature or pH shifts can be fatal

• Maintain high water quality and consistent warmth

• Regular small water changes (10–15% weekly) with matched parameters

• Never use copper-based medications or fertilizers

• Encourage natural algae/biofilm growth for nutrition

🧠 Interesting Facts

• The Red Orchid Sulawesi Shrimp has a deep red body with white or pinkish markings, resembling flower petals — hence the name “Orchid.”

• It’s one of the most visually stunning and rarest Sulawesi shrimps in the aquarium hobby.

• Native Sulawesi lakes are ancient — millions of years old — and home to many unique, endemic shrimp species.

• These shrimp are considered advanced-level due to their sensitivity and strict environmental needs.