Ember Tetra Care Guide: Hyphessobrycon amandae

If you are deciding whether to buy this species, first check the care requirements below. Then see current Ember Tetra availability. Availability and price can change; this guide remains the informational page.

Is an Ember tetra right for your aquarium?

These are decision checks, not a universal stocking calculator. The same volume can behave very differently depending on its footprint, filtration, maintenance, planting and other inhabitants.

Identity, origin and the Amanda Bleher story

The accepted scientific name is Hyphessobrycon amandae Géry & Uj, 1987. Eschmeyer's current catalogue places it in Acestrorhamphidae, subfamily Hyphessobryconinae; older aquarium books and pages may still show the traditional family Characidae.^[1][2]

The species is known from Brazil's Araguaia River basin. Its type locality—the place attached to the original scientific description—is Rio das Mortes in Mato Grosso.^[1][3] The original description appeared in Tropical Fish Hobbyist 35(5), pages 58–61 and 65; it was not published in the journal incorrectly cited by some aquarium pages.^[4]

One often-repeated story also needs a careful distinction: the fish honours Amanda Flora Hilda Bleher. Her son, Heiko Bleher, collected the holotype. Amanda was not the collector being described in that sentence.^[3]

Tank size and group needs

Ember tetras are social fish. OATA's UK trade-body sheet is deliberately general: it says tetras should be kept in groups of at least five and that more is better. The species-focused Seriously Fish profile recommends 8–10 specimens.^[5][6] Tropical Fish Co uses 10 or more as a conservative store policy, not as a number proven by a controlled Ember tetra study.

For space, OATA recommends at least 45 litres for a small shoal of a smaller tetra, while Seriously Fish gives a 45 × 30 cm base footprint.^[5][6] We use those together: about 45 litres with that footprint is a clearer starting point than the old 30-litre claim.

There is no defensible “three litres per fish” rule. Adding fish changes waste production, oxygen demand, feeding competition and social behaviour; litres alone do not describe any of those. If other fish or shrimp share the aquarium, assess their adult needs separately rather than squeezing them into the Ember calculation.

Water parameters: use ranges without chasing numbers

FishBase lists 24–28 °C for H. amandae, citing Baensch & Riehl's 1995 aquarium atlas rather than a wild-temperature study.^[3] OATA's broader captive-bred tetra sheet gives 22–27 °C, while Seriously Fish lists 20–28 °C for this species.^[5][6] Tropical Fish Co uses 24–27 °C as a cautious routine recommendation that overlaps those husbandry sources. It is not presented as a measured natural-habitat range. Use a reliable heater where room temperature cannot hold it, and avoid sudden changes.

For pH and hardness, the evidence is less neat. FishBase supplies no species-specific values. Seriously Fish gives pH 5.0–7.0 and hardness 18–179 ppm (roughly 1–10 °dGH), while OATA's general captive-bred tetra range is broader and more alkaline.^[6][5] This difference is exactly why a page should not promise that every Ember tetra “thrives in hard UK tap water”.

Ask the seller what water the fish are currently held in, test your tap and aquarium water, and plan gradual acclimation to stable conditions. If your source water is outside the supplier's workable range, get species-appropriate advice. Do not use a fixed 50/50 RO-and-tap recipe: without measuring GH, KH, pH and conductivity, the same ratio produces different water in every postcode. Pure RO also requires appropriate remineralisation.

Layout, plants and filtration

Provide open horizontal swimming space as well as planted or structured cover. A dark background and shaded areas can make the fish easier to see and may help a nervous group settle, but colour intensity is not a reliable health test by itself. Lighting, surroundings, diet, genetics, stress and camera processing can all change how orange a fish looks.

Flow should allow the group to hold position and feed without being pushed continually across the aquarium. That does not mean stagnant water: filtration and surface movement still need to support oxygen and waste processing. Cover filter intakes where a very small fish could be trapped, and keep a secure lid.

Avoid claims that tannins are a treatment or that one substrate is medically necessary. Leaves, wood and botanicals can be aesthetic or habitat choices, but they also change water chemistry and add organic material. Add them deliberately and keep testing.

Feeding very small fish

OATA describes tetras generally as omnivorous and recommends a suitable complete flake or granule, with appropriately sized live or frozen foods as variety.^[5] For Ember tetras, particle size is the practical issue: offer food small enough to take without repeated spitting or prolonged struggle.

A sensible routine is:

1. Use an appropriately sized complete food as the nutritional base.
2. Offer small live or frozen foods such as suitably sized daphnia as variety.
3. Feed only an amount the group consumes promptly.
4. Watch shy individuals and feeding competition, not just the quickest fish.
5. Remove persistent uneaten food and review portion size.

There is no evidence here for claims that one frozen food changes colour “within days”, that Ember tetras have the smallest mouth of any common tetra, or that every standard flake is unusable. Judge the food in front of the fish.

Tank mates and shrimp: compatibility is conditional

Choose companions with compatible temperature and water needs that are not large enough to eat an Ember tetra. Similar size and peaceful behaviour are better starting filters than a fixed “perfect tank mates” list. Also consider feeding speed: a quiet small fish can lose condition without being physically attacked.

Potential companions often discussed include other small peaceful tetras, small rasboras and appropriately kept small Corydoradinae. Each has its own minimum group, tank footprint and feeding needs. Read the Neon Tetra care guide, Cardinal Tetra care guide or Corydoras guide before combining species.

Shrimp compatibility needs the clearest caveat. Adult shrimp are often kept with small tetras, but no small fish is guaranteed shrimp-safe. Ember tetras may eat shrimplets, compete for small foods or keep vulnerable shrimp hidden. Dense planting can reduce exposure; it cannot guarantee survival. If breeding shrimp is the priority, a shrimp-only setup removes the fish-predation variable.

Health: recognise problems without inventing treatment

Watch the whole group during a daily check. Concerning changes include persistent gasping, loss of balance, unusual isolation, clamped fins, visible spots or lesions, rapid breathing, failure to feed, or several fish changing behaviour together.

Start with facts:

1. Test ammonia, nitrite, nitrate, temperature and any other parameters relevant to the setup.
2. Check equipment, recent additions, maintenance changes and possible contamination.
3. Photograph the signs and note when they began.
4. Separate or quarantine only with a prepared, welfare-appropriate plan.
5. Ask a specialist aquatic retailer or fish vet for diagnosis where signs persist or worsen.

The RSPCA advises checking water quality first and contacting a specialist fish vet for diagnosis and treatment.^[7] Do not automatically raise the temperature to 30 °C or use “half-dose” medicine. The University of Florida's ich guidance explains that temperature changes the parasite's lifecycle, only a particular free-swimming stage is susceptible, and treatment choice depends on the fish, water and system.^[8] Use only an appropriate authorised product exactly as its label directs unless a qualified professional instructs otherwise.

What is actually known about breeding?

Artificial propagation of H. amandae has been achieved; Taiwan's official Fisheries Research Institute records that outcome.^[9] Its public page does not provide the precise clutch size, hatch time, pH, tank volume and fry-growth schedule previously stated here.

OATA's general tetra guidance says the group includes egg scatterers, that adults may eat eggs, and that a separate setup and dedicated fry food may be needed.^[5] That is useful context, but it is not a species-specific breeding protocol. Until a legitimate original protocol or a signed breeder record is available, exact “20–40 eggs” and “24–36 hours” claims do not belong in this guide.

Buying and acclimation questions

Before ordering, compare the supplier's holding-water range with your tested aquarium and confirm that the aquarium is mature. Look for fish swimming normally as a group, breathing without obvious distress and showing no visible lesions. Colour alone is unreliable after capture, transport or a change in lighting.

Check the live Ember Tetra product page for current availability and sale-unit information. On arrival, follow the seller's current livestock acclimation instructions rather than a generic timed recipe: bag water, shipping duration, temperature and the seller's process all affect the safest method.

How to use the ranges on this page

The database-backed facts are deliberately narrow. Aquarium recommendations combine OATA's UK industry welfare guidance, species-focused Seriously Fish guidance and a conservative Tropical Fish Co policy. Where those sources differ, the difference is shown rather than hidden.

That approach is less tidy than publishing one magical number, but it is more useful: measure your water, plan for the adult group, preserve swimming footprint, and choose stability over constant adjustment. If a source, photograph or care recommendation here appears wrong, use the Suggest an edit link below. The correction email is read as editorial feedback; it is not counted as a lead or purchase.