Ember Tetra (Hyphessobrycon amandae)

The Ember Tetra (Hyphessobrycon amandae) is a diminutive characid from the central Brazilian river systems, particularly the Araguaia River basin. Despite reaching only 2 cm in length, this species makes a tremendous visual impact when kept in groups — schools of 20 or more create a spectacular shimmering effect of orange and red hues that seems to ignite planted aquariums.

Males tend to be more intensely colored, displaying deep red-orange coloration, while females are slightly larger with a more rounded belly. The species was formally described by Géry and Junk in 1977 and named in honor of Amanda Bleher, mother of the famous aquarium fish collector Heiko Bleher.

In their natural habitat, Ember Tetras inhabit slow-moving, heavily vegetated waters with abundant leaf litter and submerged root systems. The water is typically soft, acidic, and stained amber-brown from tannins. Replicating these conditions in captivity encourages the most vibrant coloration and natural behavior.

Ember Tetras are exceptionally peaceful and spend most of their time mid-water among plant stems and leaves. They are active schooling fish that look best in groups of 10 or more. Their small size makes them ideal for nano tanks and co-inhabitants with other tiny peaceful species such as micro rasboras, pygmy corydoras, and small shrimp species.

Ember Tetras thrive in soft, slightly acidic water typical of blackwater environments. Target pH of 5.5–7.0, soft water of 1–10 dGH, and temperatures of 23–29°C. While they adapt to slightly harder water, the most intense coloration is achieved in soft, acidic conditions.

A heavily planted aquarium of at least 20 liters is suitable for a small group, though larger tanks allow for more impressive schooling behavior. Dark substrate, driftwood, dried leaf litter, and dense plantings of fine-leaved plants like Java moss, Rotala, or Staurogyne create an ideal environment. Floating plants to diffuse light further encourage natural behavior.

Feed small, high-quality foods appropriate for their tiny mouths: micro pellets, baby brine shrimp, daphnia, micro worms, and crushed flake food. Feed small amounts 2–3 times daily, ensuring food particles are small enough to be consumed.

Ember Tetras are entirely peaceful and should not be kept with fish large enough to eat them. Ideal tankmates include other nano species: Chili Rasboras, Galaxy Rasboras, Pygmy Corydoras, small livebearers, and small shrimp. They may be outcompeted for food by larger, more boisterous fish.

Keep in groups of at least 10, with 20+ being ideal for the most natural schooling behavior. Avoid strong current — they are adapted to calm waters and excessive flow may stress them.