Brilliant Rummy-Nose Tetra (Bleheri)
Petitella bleheri
Brilliant Rummy-Nose Tetra (Bleheri) (Petitella bleheri) is a freshwater species with an adult-size reference of about 5 cm. It needs at least 100 litres and 10 individuals, with its social and territorial profile taken into account.
Temperatura da água
24 - 28 °C
Valor de pH
5.5 - 7
Tipo de água
Água doce
Nível do tanque
Meio
Tamanho adulto
5 cm
Volume mínimo do tanque
>= 100 L
Grupo mínimo
>= 10
GH
1 - 10 dGH
KH
1 - 5 dKH
TDS
25 - 200 ppm
Condutividade
39 - 313 uS/cm
Descrição da espécie
Geographical Origin and Habitat: A freshwater species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.
Taxonomy and Morphology: The accepted scientific name is Petitella bleheri; the verified classification records genus Petitella, family Acestrorhamphidae, subfamily Megalamphodinae, order Characiformes. Historical names remain searchable as synonyms rather than separate species.
Social Behavior: Brilliant Rummy-Nose Tetra (Bleheri) is gregarious and should be kept in a school. The minimum reference is 10 individuals; sex, maturity and available space can require a more conservative composition. Observe access to food, resting behaviour, chasing and use of shelter. Isolation, persistent competition or aggression means the number, composition or environment needs to be corrected.
Coloration and Sexual Dimorphism: Colour and shape can vary with age, sex, physiological state and environmental conditions. Identification and sexing require recognized species-level characters; one appearance or photograph is not enough.
Cuidado, criação e companheiros de tanque
Aquarium Setup: Brilliant Rummy-Nose Tetra (Bleheri) needs an aquarium of at least 100 litres, sized for adult body size and a minimum group of 10 individuals. Filtration, shelter and swimming room must match the species and the actual number kept. Volume alone does not make an enclosure suitable: tank shape and length, usable area, oxygenation and the ability to separate territories must reflect adult behaviour.
Diet and Feeding: The recorded diet is omnivorous. Offer appropriately sized foods varied within that category, and adjust quantity and frequency from actual intake, body condition and leftovers. One food or a fixed schedule is not suitable for every age and situation.
Water Quality: Maintain stable, well-oxygenated water appropriate to a freshwater species; the card's reference values are 24–28 °C, pH 5.5–7. Verify conditions with reliable tests and size maintenance and filtration to the actual load. Ranges are not automatic thresholds for treatment or rapid chemical correction.
Compatibility and Cohabitation: The cohabitation profile is suitable for a compatible community, with a generally peaceful temperament. Keep at least 10 individuals; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
Aquarium Breeding: The recorded reproductive profile is “egg scattering”. Breeding should be attempted only with healthy adults, separation capacity and a plan for eggs or young. Do not treat unverified triggers, sex ratios or hatch times as universal for this species.
Risks and Diseases: Use a secure cover and close escape gaps. Prevent problems through quarantine of new arrivals, stable water, appropriate feeding and daily observation. Similar signs can have different causes, so check parameters, history and diagnosis before medication. Follow the product label and qualified aquatic-veterinary advice; there is no universal reduced dose for a species or family.
Origem e distribuição geográfica
A freshwater species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.
Origem
Amazônia, Orinoco e Guianas
Perfil de peixe
- Temperamento
- Peaceful
- Brilliant Rummy-Nose Tetra (Bleheri) has a generally peaceful temperament. Insufficient space, an unsuitable social ratio or incompatible tankmates can substantially change observed behaviour.
- Dieta
- Omnivore
- In the wild, they are micro-predators feeding on small insects, worms, and crustaceans. In the aquarium, they readily accept high-quality crushed flakes, micro-pellets, and freeze-dried foods. Supplementing their diet with live or frozen foods like daphnia, baby brine shrimp, and bloodworms will enhance their coloration and vitality.
- Expectativa de vida
- 3-8 years
- Tamanho adulto
- 5 cm
- Proporção sexual
- School
- Brilliant Rummy-Nose Tetra (Bleheri) is gregarious and should be kept in a school. The reference minimum is 10 individuals and must not be read as permission to overcrowd the aquarium.
- Frequência de alimentação
- Twice daily
- It is highly recommended to feed them two to three small meals a day rather than one large one. Offering only what they can consume within a couple of minutes ensures minimal food waste and prevents water quality degradation. Frequent, small feedings closely mimic their natural foraging behavior in the wild.
- Carga biológica
- Low
- These small tetras produce a minimal bioload, making them excellent candidates for smaller or heavily planted aquariums. They do not generate significant amounts of waste compared to larger species, reducing the burden on the filtration system. However, keeping them in large schools will naturally increase the overall waste output, requiring adequate biological filtration.
- Fluxo
- Strong
- They prefer a moderate to low water flow that simulates the slow-moving tributaries and flooded forest regions of their natural habitat. Strong currents can exhaust these small fish and cause them significant stress over time. Providing areas of still water, particularly near dense vegetation, allows them places to rest comfortably.
- Risco de salto
- Yes
- Like many tetras, they are capable of jumping, particularly when startled by sudden movements or lighting changes. A secure, well-fitting aquarium lid is strongly recommended to prevent any accidental escapes. Floating plants can also help make them feel more secure and reduce their instinct to jump.
- Reprodução
- Egg scatterer
- Breeding these tetras can be challenging as they are egg-scatterers that provide no parental care. They require soft, acidic water and dim lighting to trigger spawning behavior successfully. A separate breeding tank with fine-leaved plants or a spawning mop is necessary, and parents must be removed immediately after laying eggs to prevent predation.
- Compatibilidade e companheiros de tanque
- Community
- The cohabitation profile is suitable for a compatible community, with a generally peaceful temperament. Keep at least 10 individuals; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
- Nível do tanque
- Middle
- These fish primarily occupy the middle to upper levels of the water column in the aquarium. They are active swimmers that appreciate ample open swimming space combined with areas of dense planting. While they occasionally dart to the surface for food or explore the bottom, they will spend most of their time cruising the midwater.
Modelos e parâmetros científicos
FishBase
Acesso aos dados científicos oficiais da espécie
FishBase v25.04Dados sincronizados em: 15/06/2026
- Nível trófico
- 3,1 ± 0,4 se
- Resiliência
- Alta (menos de 15 meses)
- Unicidade filogenética (PD50)
- 0.625
- Relação bayesiana comprimento-peso
- a = 0.01122, b = 3.07
- VulnerabilidadeVulnerabilidade baixa (10 / 100)
Galeria de imagens
Imagens licenciadas vinculadas à espécie ou, quando marcadas, ao táxon representativo mais próximo.
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