Description

Nhamundá Blue Heckel Discus Fish (Symphysodon discus)

📌 Basic Info

• Scientific Name: Symphysodon discus

• Common Names: Nhamundá Blue Discus, Nhamundá Blue Heckel, Heckel Blue Discus

• Family: Cichlidae (Cichlid Family)

• Order: Cichliformes

• Origin: Rio Nhamundá, Brazil — a blackwater tributary between the Rio Negro and Rio Trombetas in the Amazon Basin.

• Size: 6 – 8 inches (15 – 20 cm)

• Lifespan: 10 – 15 years

• Tank Zone: Middle

🌊 Water Parameters

• Temperature: 29 – 31°C (84 – 88°F)

• pH: 4.5 – 6.0 (acidic)

• Hardness: 1 – 4 dGH

• TDS: Below 100 ppm

🐟 Characteristics

• Body: Classic discus shape—round, laterally compressed, and perfectly symmetrical.

• Coloration: Shimmering iridescent blue body with deeper electric blue and turquoise hues along the fins and face.

• Vertical Bars: Features the distinct 5 central bars, with the middle (5th) bar being dark and bold, characteristic of all Heckel discus species.

• Pattern: Soft metallic blue tones blend with golden brown highlights toward the flanks.

• Eyes: Deep red or amber, providing strong contrast to the blue body.

• Behavior: Calm, schooling fish — best kept in groups. Sensitive to poor water conditions.

• Special Feature: One of the rarest and most sought-after wild-caught discus varieties, prized for its intense electric blue coloration and natural origin.

🍽️ Food

• Type: Omnivorous (prefers protein-rich diet)

• Diet: Frozen or live bloodworms, brine shrimp, blackworms, high-quality discus pellets, and beef heart mix.

• Feeding Frequency: 2–3 times per day in small portions.

• Tip: Add natural carotenoid and spirulina-based food to enhance blue brilliance and eye coloration.

🛠️ Tank Setup & Maintenance

• Tank Size: Minimum 300 liters (75 gallons) for a small group.

• Filtration: Soft, peat-filtered, tannin-rich blackwater system.

• Substrate: Fine sand or bare-bottom preferred.

• Decor: Driftwood roots, catappa leaves, and dim lighting to mimic Amazon blackwater.

• Lighting: Soft and subdued to enhance natural blue tones.

• Water Change: 30–50% daily for wild-caught specimens.

👥 Social Behavior

• Group Size: Keep 5–7 individuals minimum.

• Tank Mates: Peaceful Amazonian fish like cardinal tetras, rummy nose tetras, Corydoras, and Apistogramma species.

• Avoid: Aggressive or overly active fish.

• Compatibility: Best kept in species-only or calm community setups.

✅ Do’s
• Maintain very soft, acidic, clean water.
• Provide driftwood and leaf litter for natural comfort.
• Keep in small, stable groups.
• Use subdued lighting.

❌ Don’ts
• Avoid sudden temperature or pH changes.
• Don’t use hard or alkaline water.
• Avoid strong currents or bright lights.

⭐ Quick Tips
The Nhamundá Blue Heckel Discus is one of the most beautiful and pure wild discus varieties, admired for its vivid turquoise-blue shimmer and distinct central black band. Originating from pristine blackwater regions of the Amazon, it requires expert care but rewards keepers with breathtaking natural elegance. Perfect for serious collectors and advanced discus enthusiasts.