Yoma Danio
Danio feegradei
Native to western Myanmar, inhabiting fast-flowing, oxygen-rich mountain streams flowing down from coastal hills. The waters are clear, cool, and run over rocky beds.
Température de l’eau
18 - 24 °C
Valeur du pH
6.5 - 7.5
Type d'eau
Eau douce
Niveau dans le bac
Tous les niveaux
Taille adulte
8 cm
Volume minimal du bac
>= 120 L
Groupe minimal
>= 6
GH
5 - 15 dGH
KH
2 - 8 dKH
TDS
95 - 305 ppm
Conductivité
148 - 477 uS/cm
Description de l'espèce
Geographical Origin and Habitat: This species is endemic to western Myanmar, inhabiting fast-flowing mountain streams and small rivers that flow down from the coastal hills of the Rakhine State. They inhabit clear, cool, well-oxygenated waters running over gravelly and rocky substrates with minimal aquatic vegetation.
Taxonomy and Morphology: Belongs to the family Cyprinidae, subfamily Danioninae. Descrbed by Hora in 1937. It is a relatively large member of the Danio genus, reaching a maximum length of approximately 8 cm. The body is slender, elongated, and highly streamlined, adapting them to swim against fast currents.
Social Behavior: Highly active, fast-swimming, and gregarious. It shoals near the upper levels of the water column. Must be kept in schools of at least six to eight individuals to establish a natural hierarchy, minimize stress, and allow them to display their full coloration.
Coloration and Sexual Dimorphism: Displays a metallic silvery-blue body with iridescent hues. The sides are decorated with gold spots and vertical yellow bars on the anterior half, transitioning into bluish longitudinal stripes near the tail. Mature males are slimmer and show brighter colors than females.
Soins, reproduction et cohabitation
Aquarium Setup: Requires a long aquarium of at least 120-150 liters (30-40 gallons) to accommodate their active swimming. Strong water current produced by powerheads or spray bars is essential. A tightly fitting lid is mandatory as this species is an exceptional and powerful jumper.
Diet and Feeding: A voracious omnivore. In the aquarium, they accept high-quality flakes and floating pellets. Their diet should be enriched with live or frozen foods such as daphnia, brine shrimp, bloodworms, and fruit flies, which simulate their natural surface feeding habits.
Water Quality: Prefers cool, clean water. Temperature should be maintained between 18°C and 24°C (64-75°F); they do not thrive in warm, stagnant setups. Keep pH between 6.5 and 7.5, and GH from 5 to 15 dGH. High dissolved oxygen levels are critical.
Compatibility and Cohabitation: Ideal for river-themed biotopes. Compatible with active species that share similar habitat requirements, such as loaches, barbs, and other active danios. Avoid housing them with slow-swimming, shy, or long-finned tankmates that could be stressed.
Aquarium Breeding: Egg scatterers with no parental care. Breeding requires a separate spawning tank equipped with a mesh grid or a layer of marbles on the bottom to protect the falling eggs from being eaten by the parents. Remove the adults immediately after spawning.
Risks and Diseases: The main threat is jumping out of the tank through unsecured gaps in the cover. High oxygen demand makes them sensitive to poor gas exchange or filter failure, leading to rapid gasping. Maintain low organic waste through weekly water changes.
Origine et répartition géographiques
This species is endemic to western Myanmar, inhabiting fast-flowing mountain streams and small rivers that flow down from the coastal hills of the Rakhine State. They inhabit clear, cool, well-oxygenated waters running over gravelly and rocky substrates with minimal aquatic vegetation.
Origine
Asie du Sud et du Sud-Est
Profil de poisson
- Tempérament
- Peaceful
- The Danio feegradei is robust, playful, and relentlessly energetic, bringing constant motion to the upper levels of the aquarium. They are peaceful toward other species but maintain a strict internal hierarchy through harmless chasing within their own school. Their lively temperament makes them perfect for bringing activity to an otherwise static aquarium display.
- Régime alimentaire
- Omnivore
- In the wild, Danio feegradei is an opportunistic micropredator, feeding on small insects, zooplankton, and aquatic larvae. In captivity, they are highly unfussy and will greedily accept high-quality flakes, micro-pellets, and freeze-dried foods. Supplementing their diet with live or frozen daphnia, brine shrimp, and bloodworms will keep them in peak condition.
- Espérance de vie
- 3-5 years
- Taille adulte
- 8 cm
- Ratio des sexes
- School
- To disperse natural chasing behavior, Danio feegradei should be kept in large schools of at least eight to ten individuals. A balanced sex ratio or keeping slightly more females than males is recommended. This helps prevent dominant males from overly harassing individual females during their vigorous mating pursuits.
- Fréquence d'alimentation
- Twice daily
- Due to their high energy expenditure, Danio feegradei should ideally be fed small amounts two to three times a day. They feed aggressively and quickly from the surface and mid-water levels, leaving little for slower fish. Providing varied foods in small portions ensures their fast metabolism is fully supported.
- Charge biologique
- Low to Medium
- The Danio feegradei has a moderate bioload due to its extremely active lifestyle and rapid metabolism. While they are small, their constant swimming requires frequent feeding, which indirectly increases waste production. Excellent filtration and regular water changes are required to maintain pristine water conditions for this schooling fish.
- Courant
- Strong
- Native to fast-flowing streams and rivers, Danio feegradei thrives in aquariums with moderate to strong water flow. They actively enjoy swimming against currents, which provides necessary exercise and enrichment. High oxygenation provided by powerheads or strong filter outputs is crucial to replicate their natural riverine environment.
- Risque de saut
- Yes
- The Danio feegradei poses a very high jump risk, particularly when startled, introduced to a new tank, or during nighttime hours. Their powerful, streamlined bodies are adapted for swift movement and escaping predators by leaping out of the water. A tight-fitting lid with no gaps is absolutely mandatory to prevent these active fish from jumping out.
- Reproduction
- Egg scatterer
- Like most cyprinids, Danio feegradei is an egg-scatterer that shows absolutely no parental care. They typically spawn in the early morning, releasing non-adhesive eggs among dense vegetation or spawning mops. To raise fry successfully, the adults must be removed immediately after spawning, as they will voraciously eat their own eggs.
- Compatibilité et compagnons
- Verify
- This active species is generally peaceful but its frantic swimming behavior can stress shy or slow-moving tank mates. Danio feegradei makes an excellent dither fish for moderately peaceful cichlids, loaches, and larger tetras. They should not be kept with fish that have long, trailing fins, as they may occasionally nip them during feeding frenzies.
- Niveau dans le bac
- All levels
- The Danio feegradei is predominantly a top to mid-level swimmer, constantly patrolling the upper reaches of the aquarium. They are always on the move, requiring significant open swimming space in the upper half of the tank. They rarely venture to the bottom unless chasing sinking food during feeding time.
Modèles et paramètres scientifiques
FishBase
Fenêtre sur les données scientifiques officielles de l’espèce
FishBase v25.04Données synchronisées le : 15/06/2026
- Niveau trophique
- 3 ± 0,4 se
- Résilience
- Élevée (moins de 15 mois)
- Singularité phylogénétique (PD50)
- 0.5
- Relation bayésienne longueur-poids
- a = 0.00589, b = 3.12
- VulnérabilitéVulnérabilité faible (10 / 100)
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