Fire Ring Danio (Danio choprae)

The Fire Ring Danio (Danio choprae) is a jewel of the danio family, native to the Mogaung River — a tributary of the Irrawaddy River in northern Myanmar (Burma). Described formally only in 1928, it remained relatively rare in the aquarium hobby until increased captive breeding made it more accessible in recent decades.

Its coloration is extraordinary for such a small fish: the body shimmers with a warm golden-orange iridescence under light, overlaid with 7–9 blue-green vertical bars that create a striking pattern. The fins show orange highlights in males, and the overall effect is reminiscent of a fish that seems to glow from within — hence the common name 'Glowlight Danio.'

Reaching 3–4 cm in length, Fire Ring Danios are ideal nano-to-small aquarium fish. Males are typically slimmer and more intensely colored; females are slightly larger with rounder abdomens. The species is sexually dimorphic during breeding season when males display vigorously.

In nature, Fire Ring Danios inhabit clear, fast-flowing hill streams with rocky substrates and minimal vegetation. They are strong, active swimmers that thrive in well-oxygenated water with moderate to strong current. In the aquarium, they are peaceful, energetic schooling fish that occupy all water levels, though they tend to be most active in the middle and upper zones.

Fire Ring Danios prefer clean, well-oxygenated, slightly cool water: pH 6.5–7.5, hardness 5–15 dGH, and temperatures 18–26°C. They can adapt to warmer temperatures but show the best health and coloration in the cooler end of this range. Good surface agitation and oxygenation are important.

A minimum 60-liter aquarium is suitable for a group of 8–10 fish. They are active swimmers that need horizontal swimming space. Provide some current with a powerhead or strong filter output to simulate their natural stream habitat. Dense plantings around the periphery with open central swimming space suit them well.

Feed a varied diet of quality flake food, micro pellets, and small live or frozen foods: daphnia, baby brine shrimp, micro worms, and cyclops. They are enthusiastic, active feeders that compete well at feeding time.

Fire Ring Danios are entirely peaceful and compatible with most community species: tetras, rasboras, corydoras, small gouramis, and livebearers. Avoid slow-moving, long-finned species that may be stressed by danio activity, or very large fish that may eat them.

Keep in groups of at least 8–10 for natural schooling behavior. Larger groups of 15–20 create impressive displays. Regular water changes of 25–30% weekly maintain the excellent water quality this species prefers.