Ember Tetra

The ember tetra is arguably the best nano fish for planted tank beginners. Hardy, vividly colored in intense orange-red, and peaceful with virtually everything, a school of 15–20 ember tetras drifting through a densely planted aquarium creates a living, flickering warmth that earns the fish its name. Unlike some nano species that require soft, acidic blackwater, ember tetras adapt readily to a wide range of conditions — making them forgiving for aquarists still dialing in their water parameters.

Taxonomy & Classification

The ember tetra belongs to the Characidae family — the same family as neon tetras, cardinal tetras, and piranhas. Described relatively recently in 1994, it is named for Amanda Géry, daughter of the ichthyologist Jacques Géry who co-described the species. Its vivid orange-red coloration and tiny size have made it one of the most popular nano tetras in the planted tank hobby.

Rank	Classification
Kingdom	Animalia
Phylum	Chordata
Class	Actinopterygii
Order	Characiformes
Family	Characidae
Genus	Hyphessobrycon
Species	H. amandae

Natural Habitat

Ember tetras are native to the Araguaia River and its tributaries in the Brazilian Cerrado region. They inhabit slow-moving, heavily vegetated backwaters and stream margins characterized by warm, acidic water with abundant plant cover.

• Densely planted margins: fish shelter in aquatic grasses and vegetation at the river's edge
• Warm, acidic water: pH 5.5–7.0 with moderate soft water
• Slow flow: backwaters and oxbow lakes with minimal current
• Leaf litter floor: decomposing leaves and woody debris provide invertebrate food sources

Water Requirements

Parameter	Wild Preference	Aquarium Range
Temperature	73–84°F (23–29°C)	73–84°F (23–29°C)
pH	5.5–7.0	5.5–7.0
Hardness (GH)	1–8 dGH	1–8 dGH
Ammonia	0 ppm	0 ppm
Nitrite	0 ppm	0 ppm
Nitrate	Near zero	<20 ppm

Tank Setup

A 10-gallon tank suits a school of 8–10 ember tetras comfortably. Ideal setup for vivid coloration:

• Dark substrate: black sand or fine dark gravel — contrasts beautifully with orange coloration
• Dense background planting: stem plants (rotala, ludwigia), moss walls — ember tetras look best against green
• Floating plants or subdued lighting: reduces stress and intensifies color
• Gentle filtration: sponge filter or spray bar; strong current is tolerated but not preferred
• Driftwood and leaf litter: tannins from Indian almond leaves enhance color and create a natural aesthetic

Schooling Behavior

Ember tetras are active, social schooling fish that are most confident and colorful in groups of 8 or more. Unlike some tetras that form tight defensive schools only when threatened, ember tetras swim in loose, constantly moving groups throughout the tank — exploring plants, drifting through open water, and weaving among stems.

Males are slightly more intensely colored than females and may display to each other with fin-spreading, but aggression is minimal. In a well-planted tank with adequate school size, they show no real behavioral issues.

Diet & Feeding

Ember tetras are micro-predators and omnivores in the wild, eating tiny invertebrates, zooplankton, and plant matter. In captivity:

• Staple: high-quality micro-pellets or finely crushed flake (ensure food is small enough for their tiny mouths)
• Frozen food: baby brine shrimp, micro worms, daphnia, cyclops
• Live food: vinegar eels, Walter worms, baby brine shrimp — ideal for bringing fish into breeding condition

Compatible Tank Mates

Ember tetras are peaceful with virtually all comparably sized, non-aggressive fish. Excellent companions:

• Chili rasboras, harlequin rasboras, other nano rasboras
• Pygmy corydoras (excellent bottom-level tank mates)
• Neon tetras, cardinal tetras (mid-level companions)
• Honey gourami (peaceful, non-predatory)
• Cherry shrimp (adult shrimp generally safe; juveniles may occasionally be eaten)
• Otocinclus catfish

Avoid: Large or predatory fish, aggressive species, or any fish large enough to eat them (ember tetras are very small).

Common Health Issues

• Ich — white spots; temperature increase plus medication; ember tetras are relatively hardy
• Velvet — fine golden dust; treat with copper medication
• Fin rot — secondary to poor water quality; maintain clean water
• Neon Tetra Disease — can affect other Characidae species including ember tetras; incurable; quarantine affected individuals

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