Purple Rose Danio
Danio roseus
This energetic and streamlined cyprinid flashes silvery-pink hues as it darts through the water. A hardy schooling fish, it brings continuous movement to well-oxygenated, community tank setups.
Température de l’eau
20 - 27 °C
Valeur du pH
6 - 7.5
Type d'eau
Eau douce
Niveau dans le bac
Fond et milieu
Taille adulte
5 cm
Volume minimal du bac
>= 60 L
Groupe minimal
>= 6
GH
5 - 18 dGH
KH
3 - 12 dKH
TDS
105 - 390 ppm
Conductivité
164 - 609 uS/cm
Description de l'espèce
Geographical Origin and Habitat: Native to Southeast Asia, particularly widespread in river systems of Myanmar, Thailand, and Laos. It inhabits small forest streams, clear fast-flowing creeks, and well-oxygenated rivers, preferring shaded waters with overhanging trees.
Taxonomy and Morphology: Belongs to the family Cyprinidae and the genus Danio. Features a slender, streamlined body shape and possesses two pairs of short barbels on its mouth. Adults reach a maximum size of approximately 4 to 5 centimeters.
Social Behavior: Highly peaceful, active, and schooling. This species must be kept in groups of at least 8 to 10 specimens to prevent stress and encourage their natural schooling behavior, which involves constant active swimming.
Coloration and Sexual Dimorphism: Exhibiting a beautiful silvery-pink to violet iridescence along the body under good lighting conditions. Adult males are generally slimmer and show slightly more intense pink coloration than the deeper-bodied females.
Soins, reproduction et cohabitation
Aquarium Setup: An aquarium of at least 80 liters with a long footprint is recommended to allow ample swimming length. Plant the back and sides with hardy plants (such as Java fern) while leaving the center open. Moderate water current is beneficial.
Diet and Feeding: Unfussy omnivore. Readily accepts dry flakes and micro-pellets. To encourage optimal health and coloration, supplement their diet with live or frozen foods such as daphnia, brine shrimp, and bloodworms.
Water Quality: Prefers cool, clean, and highly oxygenated water. Keep the temperature between 20 and 25 °C, pH range of 6.5 to 7.5, and general hardness at 5 to 15 dGH. Ensure efficient filtration and weekly partial water changes.
Compatibility and Cohabitation: Excellent choice for a community tank. Suitable tankmates include other danios, rasboras, small tetras, corydoras, and peaceful bottom dwellers. Avoid very slow-moving or long-finned fish that might be stressed by their activity.
Aquarium Breeding: Prolific egg scatterer. Spawning is easily achieved in a separate breeding tank filled with fine plants or a spawning grid. Parents will consume their own eggs and must be removed immediately after spawning.
Risks and Diseases: Very hardy, but sensitive to low oxygen levels and high organic load. Ensure adequate surface agitation and regular tank maintenance to prevent bacterial and parasitic outbreaks.
Origine et répartition géographiques
Native to Southeast Asia, particularly widespread in river systems of Myanmar, Thailand, and Laos. It inhabits small forest streams, clear fast-flowing creeks, and well-oxygenated rivers, preferring shaded waters with overhanging trees.
Origine
Asie du Sud et du Sud-Est
Profil de poisson
- Tempérament
- Peaceful
- The Danio roseus 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 roseus 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
- 5 cm
- Ratio des sexes
- Solitary
- To disperse natural chasing behavior, Danio roseus 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 roseus 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
- The Danio roseus 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
- Moderate
- Native to fast-flowing streams and rivers, Danio roseus 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 roseus 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 roseus 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
- Community
- This active species is generally peaceful but its frantic swimming behavior can stress shy or slow-moving tank mates. Danio roseus 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
- Middle/Bottom
- The Danio roseus 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)
Espèces associées
Recommandations regroupées par proches parents, compagnons et soins similaires.
