Blackline Blue Tetra (Hyphessobrycon sp. cf. melanostichos) – Rare, Peaceful Schooling Fish with Iridescent Blue Highlights
The Hyphessobrycon sp. cf. melanostichos, commonly known as the Blackline Blue Tetra, is a rare and captivating species that adds an elegant shimmer to any freshwater aquarium. Its slender body glows with metallic blue and turquoise tones, contrasted by a bold black horizontal stripe that runs from head to tail.
Originating from South American river systems, this tetra thrives in well-maintained community tanks with soft, slightly acidic water and gentle filtration. Under the right lighting, their iridescent scales create a stunning, mirror-like glow that truly stands out in planted aquascapes.
Moderate
Peaceful, schooling fish
Up to 1.5 inches (3.8 cm)
5–7 years with proper care
Omnivorous — thrives on a balanced diet of high-quality flakes, micro pellets, and frozen or live foods such as daphnia and brine shrimp. Regular variety enhances coloration and vitality.
Minimum 15 gallons
Temperature: 74–82°F (23–28°C)
pH: 6.0–7.5
Hardness: Soft to moderately hard
Best kept in groups of six or more to promote natural schooling behavior and reduce stress.
Excellent for peaceful community aquariums alongside rasboras, corydoras, and small tetras. Avoid aggressive or fin-nipping tank mates.
Provide a planted aquarium with open swimming areas and subdued or natural lighting to bring out their full iridescent coloration. A dark substrate will further enhance their reflective blue and black tones.
