Not furry, but we like them anyway.
Ember Tetra
Hyphessobrycon amandae
Also called Amanda's tetra, Fire tetra, Red tetra, Dwarf red tetra, Funkensalmler
From South America: the Rio Araguaia basin in Mato Grosso, Brazil, including the Rio das Mortes and Rio Garcas tributaries and their side streams and flood zones1234
At a glance the quick version
Looks how to spot one
Tiny scaled characin with a partly see-through body
A very small, slender tetra whose body is somewhat translucent, so the backbone can often be seen. It glows in shades of orange to fiery red, strongest on the head, belly, dorsal fin and tail, and it has large eyes for its size with a dark rim. Males tend to be slimmer and more intensely coloured, while females are a little larger and rounder.432
Personality what they are like
A gentle, unhurried schooling fish that keeps to the middle of the tank and gets along with other small, calm species. Its relaxed presence can help shy fish such as dwarf cichlids feel secure enough to come out into the open.24
Daily activity how busy a day looks
An active mid-water swimmer that likes to move about as a group, so it appreciates some open swimming space between areas of dense planting.42
Grooming and care the hands-on bits
Keep the water clean and stable with soft to moderately soft, slightly acidic conditions. Suggested ranges: temperature roughly 20-29 C (most sources centre on 23-28 C), pH about 5.0-7.0 (around 6.6 is often cited), and hardness about 1-17 dGH, with softer water closer to its wild habitat. Colours tend to be best in a mature, well-planted tank with a dark substrate.2413
Home where they are happiest
A tank of at least about 38-41 litres (10-11 US gallons, roughly 45 x 30 cm footprint) suits a group. Heavy planting, a dark substrate, floating plants, driftwood and a layer of dried leaf litter recreate the soft, tannin-tinted waters it comes from. In the wild it is thought to live in quiet side streams, backwaters, oxbow lakes and flooded areas rather than main river channels.243
Food basics what goes in the bowl
A micropredator that picks off tiny invertebrates and zooplankton in nature. In the aquarium it takes small dried foods such as fine flakes, but does best with regular small live or frozen foods like baby brine shrimp (Artemia nauplii), Moina and grindal worms.24
Company who they like around
A shoaling species that should be kept in a group: recommendations range from a minimum of 6 to 8-10 or more fish. Good tankmates are other small, peaceful fish such as similar-sized tetras, hatchetfish, small catfish and dwarf cichlids.24
The story where it all began
The ember tetra was scientifically described in 1987 by Gery and Uj, who placed it in the large characin genus Hyphessobrycon. They chose the species name amandae to honour Amanda Bleher (1910-1991), a German limnologist and the mother of the well-known fish explorer Heiko Bleher; the Bleher family had spent decades on collecting expeditions in South America and ran an aquatic nursery in Brazil from 1958. The species comes from the Rio Araguaia system in central Brazil and has since become a staple of the ornamental fish trade, prized in particular by nano tank and planted aquarium keepers. Later studies of the genus, including a 2011 molecular analysis, kept H. amandae within the core group of true Hyphessobrycon species.1452
Fun facts for the dinner table
- 1
Its scientific name honours Amanda Bleher, a German limnologist and the mother of fish explorer Heiko Bleher.1
- 2
It is one of the tiniest fish kept in aquariums: males are often only about 1.5 cm long, with females slightly larger at around 1.8 cm.3
- 3
The waters of its home range are extremely soft, with a measured conductivity of only around 17 microsiemens per centimetre.3
- 4
Because it is so calm, it is often used as a 'dither fish' that encourages timid dwarf cichlids to come out and display.2
- 5
The genus name Hyphessobrycon roughly combines Greek words for 'slightly smaller' and 'to bite', and the genus holds nearly 150 species.6
- 6
Ember tetras scatter their eggs among fine-leaved plants and do not guard them; decaying leaf litter in the tank grows microscopic life that newly hatched fry can feed on.2
- 7
In the trade it goes by several names, including fire tetra, red tetra, dwarf red tetra and Amanda's tetra.2
Recognised by the official bits
- IUCN Red List
- Assessed as Least Concern (November 2018)1
- FishBase
- Formally described by Gery & Uj in 1987; listed as a commercial ornamental aquarium species1
The care rhythm Furry Diary remembers it for you
A typical home-care rhythm for a Ember Tetra. It is our own starting plan, not a vet's advice, and you can change every line in the app.
- FeedingSmall amounts once or twice a dayevery day
- Temperature checkevery day
- Water changeAbout 25% of the waterevery week
- Water testevery week
- Glass cleanevery week
- Filter rinseRinse in old tank water, never tap waterevery month
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Where this comes from
Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at support@furrydiary.app and we will fix it.
- FishBase: Hyphessobrycon amandae (Ember tetra) fishbase.seused for distribution, max length, temperature, IUCN status, describer/year, etymology, trade status
- Seriously Fish: Hyphessobrycon amandae seriouslyfish.comused for length, tank size, water parameters, diet, behaviour, group size, sexing, breeding, habitat, taxonomy, trade names
- Wikipedia (German): Funkensalmler de.wikipedia.orgused for detailed distribution, wild water chemistry, size by sex, appearance, breeding
- Wikipedia: Ember tetra en.wikipedia.orgused for size, colour, lifespan note, diet, behaviour, tank size, water parameters, group size, naming
- Wikipedia: Heiko Bleher en.wikipedia.orgused for background on the Bleher family expeditions and Brazil nursery
- Wikipedia: Hyphessobrycon en.wikipedia.orgused for genus size and etymology
Checked 2026-09-30. Text is written in our own words from these sources.