Queen Danio

The Queen Danio is an attractive and underappreciated member of the Devario genus, native to the river systems of Thailand and Myanmar. It grows to approximately 6 cm and displays striking coloration: a silvery base body adorned with vivid blue-green to turquoise iridescent stripes running horizontally from behind the gill plate to the caudal peduncle, combined with yellowish to golden markings. Males are more slender and intensely colored than females. Like other large danios in the Devario genus, the Queen Danio is noticeably bigger and more robust than the common Zebrafish, requiring a larger aquarium and producing a more visually impactful display. It is an active, sociable, mid-to-upper water swimmer that thrives in a school of six or more. Wholly peaceful, it makes an excellent community tank occupant alongside other medium-sized peaceful species. It prefers somewhat warmer water than some other danios, with a temperature range of 22–27°C. In the wild it inhabits streams and rivers with moderate current, clear water, and sandy or gravelly substrates. The Queen Danio is an undemanding omnivore that readily accepts all standard aquarium foods, and its combination of size, color, and easy maintenance makes it a rewarding species for beginners and experienced hobbyists alike.

Tank Setup A minimum of 80 liters for a school of six. This active species appreciates a long aquarium with substantial open swimming space. Use fine gravel or sand substrate. Add plants such as Vallisneria, Hygrophila, or Java fern along the sides and back, but keep the central swim lane clear. A tight-fitting lid is essential to prevent jumping.

Water Parameters Maintain pH between 6.0 and 7.5. Temperature should be kept at 22–27°C, somewhat warmer than some other danios. No specific hardness requirements, but soft to moderately hard water is appropriate. Good oxygenation through surface agitation and moderate water movement is beneficial. Perform weekly water changes of 20–25%.

Feeding An easy-going omnivore. Feed quality flake or small pellets as a staple, supplemented with live or frozen daphnia, brine shrimp, and bloodworm. Feed two to three times daily in modest portions. The Queen Danio is not selective and adapts to whatever is offered.

Tankmates Compatible with most medium-sized peaceful species. Good companions include barbs, other danios, larger tetras, rainbowfish, gouramis, corydoras, and loaches. Avoid very small species that may be outcompeted or intimidated by the danios' activity.

Health and Maintenance Robust and generally healthy under good conditions. Secure the tank lid to prevent jumping losses. Monitor for ich if temperatures fluctuate. Maintain consistent water changes and good filtration for best results.