Rio Negro Heckel Discus 4” (Symphysodon discus) – The Crown Jewel of the Amazon
Experience the pinnacle of freshwater fishkeeping with the true Rio Negro Heckel Discus. Sourced directly from the blackwater rivers of the Amazon basin, the Symphysodon discus is universally recognized by its defining feature: the bold, distinctively thick fifth vertical bar (the "Heckel Bar") running straight down the middle of its body. At 4 inches, these magnificent sub-adults are at the perfect stage to adapt to your aquarium and grow into breathtaking, plate-sized adults. Their base coloration features warm reddish-browns overlaid with stunning, intricate blue and turquoise striations that will only intensify as they mature. Keeping wild Heckel discus is a badge of honor for the advanced aquarist, requiring dedication to pristine, warm, and acidic blackwater conditions, but the reward is a truly regal centerpiece.
Rio Negro Heckel Discus 4” (Symphysodon discus) Key Features
The Iconic Heckel Bar: Features the instantly recognizable, prominently dark center vertical bar that distinguishes true Heckel discus from other species.
Authentic Wild-Caught: Ethically sourced from the Rio Negro, bringing genuine wild genetics and natural behaviors into your biotope.
Intricate Striations: Displays a beautiful, naturally occurring pattern of blue and turquoise horizontal lines over a warm, earthy base.
Perfect 4-Inch Size: An ideal sub-adult size—robust enough to handle shipping well, yet young enough to properly adapt to captive water parameters and diets.
Majestic Schooling Behavior: Highly social cichlids that establish a fascinating pecking order and move with unparalleled grace when kept in groups.
Rio Negro Heckel Discus 4” (Symphysodon discus) Care Requirements
Tank Size: Minimum 75 gallons for a small group of 5-6 individuals. Discus are highly social and must be kept in schools to feel secure and thrive.
Water Temperature: 82–86°F (28–30°C). They strictly require warmer water than most tropical fish.
pH Range: 4.0–6.0 (Strictly requires very soft, acidic water; blackwater extract or botanical tannins like Indian Almond leaves are highly recommended).
Diet: Carnivorous/Omnivorous. These wild-caught specimens are carefully transitioned, but require a high-quality, high-protein diet. Feed a mix of premium discus granules, beef heart mixes, and frozen foods like bloodworms and enriched brine shrimp.
Tank Mates: Must be kept with peaceful, heat-tolerant species. Excellent companions include Cardinal Tetras, Rummy Nose Tetras, Sterbai Corydoras, and peaceful dwarf cichlids like German Blue Rams.
Why Choose Our Rio Negro Heckel Discus 4” (Symphysodon discus)?
At Amazonia Tropical Fish LLC, we take the risk out of buying wild discus. Our 4" Rio Negro Heckels undergo a rigorous, multi-week quarantine process. They are prophylactically treated for internal and external parasites and are verified to be eating aggressively before they are listed for sale. You are receiving premium, conditioned wild stock.
Shipping & Live Arrival Guarantee
We safely ship our premium discus nationwide from our US-based facility using specialized, insulated packaging. Every order is fully covered by our Live Arrival Guarantee.
