Emerald Dwarf Danio

A tiny turquoise to emerald fish with narrow dark vertical bars and orange-red colour in the fins.

Often sold under the older name Microrasbora erythromicron. It is deeper-bodied and vertically barred compared with Celestial Pearl Danio.

Males are generally slimmer and show stronger emerald colour with brighter red-orange fins. Females are fuller through the abdomen and often appear paler or more golden.

Keep a group of at least 8 in an aquarium at least 60 cm long. Provide open swimming space, secure cover, efficient filtration, and moderate water movement.

Use plants, wood, and rounded stone around the margins while preserving a clear central swimming area.

Dense planting, moss, fine-leaved cover, and shaded margins help these small fish feel secure, while a clear central area allows normal group movement.

Emerald Dwarf Danio is a social, active schooling fish that should be maintained with its own kind. Most chasing is part of normal group interaction, but cramped quarters or a group that is too small can concentrate aggression.

Maintain at least 8, preferably 12 or more. A larger group produces more natural schooling and spreads chasing. Not truly territorial, although males may spar or defend short-lived display positions within the group. These smaller species often look more confident in a well-planted aquarium and may spend less time in the open when kept with large or restless tankmates.

Best kept with small, peaceful fish that will not dominate feeding time or keep the group in hiding. Avoid large, predatory, highly territorial, or very boisterous tankmates. Adult dwarf shrimp may coexist in a mature planted tank, but eggs, larvae, and shrimplets remain potential food.

Use clean, oxygen-rich water with moderate mineral content. Avoid abrupt drops in hardness or pH.

Use finely crushed flakes, micro-pellets, cyclops, small Daphnia, microworms, and newly hatched Artemia that can be swallowed easily. Offer modest portions that the school can finish promptly, and distribute food across the surface or current so subordinate fish have access. A varied diet supports colour, condition, and breeding readiness better than relying on one dry food. These small fish can be hesitant feeders in busy communities, so confirm that food reaches them.

Feed small portions once or twice daily. Active danios feed quickly, so check that slower tankmates receive food.

This species is an egg scatterer with no parental care. Well-conditioned adults may spawn among moss, fine-leaved plants, or a spawning mop, often over several days. Adults and older fry may eat eggs or newly hatched fry, so breeders should be removed or eggs collected into a separate rearing container. Begin the smallest fry on infusoria or another microscopic first food, then move to microworms and newly hatched Artemia as they grow.