Blue Moon Danio - Devario xyrops Fish Profile & Care Guide
Introduction
The Blue Moon Danio (Devario xyrops), a recently identified species within the Cyprinidae family, hails from the pristine waters of Southeast Asia. This captivating fish distinguishes itself with its unique morphology and vibrant colour patterns that appeal to the scientific community and aquarium enthusiasts. Blue Moon Danios exhibit remarkable adaptability and resilience in varied water conditions, embodying the dynamic ecosystems of its habitat. Its discovery adds significant value to the region's biodiversity, offering new opportunities for ecological study and conservation efforts. With its striking appearance and engaging behaviour, Devario xyrops is poised to become a cherished species among aquarists seeking to diversify their collections with rare and exotic aquatic life.
Blue Moon Danios flourish in schools of 6 to 10, a practice that diminishes their stress and creates an aesthetically pleasing, natural display. These gregarious fish exhibit signs of distress when isolated, underscoring their need for social interaction. Grouping them also minimizes potential aggression as individuals focus on their standing within the social hierarchy. Suitable companions for Blue Moon Danios include small Cyprinids, other Danios, livebearers, Rasboras, Tetras, and bottom-dwelling species such as Loaches and Catfish, along with Gobies and Dwarf shrimp. While they can share space with most Dwarf Cichlids and Gouramis, avoiding very small, slow-moving, or finely-finned species is wise to prevent stress and injury.
Their inclination towards well-oxygenated environments with moderate currents mirrors the conditions of the Blue Moon Danios native habitat, underscoring the importance of maintaining superior water quality and a well-established aquarium ecosystem for their flourishing. For an optimal environment, a richly planted aquarium layout is advised, positioning flora along the aquarium's perimeter while preserving a clear central zone for swimming. This makes them particularly suited for intricately designed aquascapes. Incorporating floating plants to modulate light levels within the aquarium is also beneficial and tends to be well-received. Due to their tendency for rapid movements, it is crucial to equip the aquarium with a secure, tight-fitting lid to avert any potential escapes.
The Blue Moon Danio boasts a subtle palette of colours, with a pale brownish back and whitish sides. The upper part of its gill cover is a similar brown, turning to silver below. A distinctive feature is the narrow dark brown line running down the middle of its back before the dorsal fin. Additionally, it sports a dark, vertically oriented spot on the cleithrum, partially covering the first scale of the lateral line and the scale above it.
Along its sides, just before the vertical line from the dorsal fin's origin, there are 4 to 5 short, vertical brown bars which may blend together in some fish to form a longer, dark blotch. Behind this, a dark brown horizontal band edged with lighter stripes runs from just behind the anal fin origin to the tail's end, sometimes accompanied by faint vertical bars or a row of small spots in between.
The dorsal and anal fins are marked with a grey stripe at the base, fading to almost transparent at the edges. The tail fin is lightly coloured, with the dark band from the body sometimes extending faintly across its middle rays. The pectoral and pelvic fins are transparent, adding to the fish's delicate appearance.
Availability
The Blue Moon Danio isn't avilable any of our marketplace shops, want to be the first to offer it?.
Photos
Sexual Dimorphism
Differentiating between male and female Blue Moon Danios poses a subtle challenge due to minimal visible distinctions. Nonetheless, adult females generally present a less vibrant colouration compared to males and possess a marginally more robust body structure.
Quick Facts
| Scientific Name | Devario xyrops |
|---|---|
| Year Described | 2009 |
| Other Names | Annie's Dwarf Goby |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Cypriniformes |
| Family | Cyprinidae |
| Genus | Devario |
| Origins | Myanmar |
| Approx Max Size | 8 cm |
| Temperament | Peaceful |
| Aquarium Level | Middle - Top |
| Difficulty | Beginner - Intermediate |
| Shoaling | Yes |
| Best kept as | Groups 6+ |
| Diet & Feeding | Omnivore |
| Reproduction | Egg-Scatterer |
| Average Lifespan | Up to 5 Years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| pH | 6.5 - 7.5 |
| GH | 5 - 15 |
| TDS | 36 - 268 |
| ℉ | 64 - 79 |
|---|---|
| ℃ | 18 - 26 |
Natural Habitat
The Blue Moon Danio is native to the southwestern region of Myanmar in Southeast Asia. It thrives in the serene, clear waters of small forested streams along the western slopes of the Arakan Mountains in Rakhine State. These habitats feature substrates of stones, gravel, and rock and, during the dry season, transform into a series of interconnected pools, reflecting the species' adaptability to varying aquatic environments.
Breeding
Blue Moon Danios, an egg-scattering species, do not engage in parental care but are prolific breeders under conducive conditions. A meticulous strategy is recommended for those aiming to facilitate breeding.
Commence by conditioning the breeding group collectively, then prepare a dedicated breeding tank that will serve as a nursery post-spawning. This tank should be outfitted with fine-leaved vegetation or spawning mops, maintaining water pH levels from slightly acidic to neutral. Incorporate an air-powered sponge filter or air stone to ensure adequate water circulation and oxygenation.
Upon noticing gravid females, transfer one or two pairs to the breeding tank. Spawning typically ensues within a day, though removing the pairs after a maximum of two days is critical to prevent egg predation. Egg incubation is influenced by temperature, generally 50 to 60 hours until the fry begins swimming. Initial fry feeding should consist of Paramecium or infusoria, progressing to artemia nauplii, microworms, and finely powdered dry foods as they grow to support their development effectively.
Diet & Feeding
Blue Moon Danios are omnivorous with a dietary preference that mirrors the eclectic abundance of their natural habitats. In a controlled environment, they thrive on a balanced diet comprising high-quality flake foods, micro pellets, and an assortment of live or frozen foods such as brine shrimp, daphnia, and bloodworms. Their feeding regimen benefits significantly from including vegetable-based foods to mimic the diversity of their diet in the wild. For optimal health and colouration, offering a variety of foods is advisable, ensuring a comprehensive intake of nutrients. This caters to their nutritional needs and stimulates their foraging instincts, contributing to their overall well-being and vitality in a captive setting.
Other Danios
Published: 08 Apr 2024
Last Updated: 08 Apr 2024