Breeding
Some species of Devario, such as the giant danio, are among the easiest aquarium fish to breed. Other species, such as Devario pathirana, are far harder to spawn. All scatter their eggs over the substrate. The eggs are adhesive and hatch within 2–3 days. Eggs will be eaten enthusiastically unless protected by a heavy planting, e.g. Java moss, or a spawning mop.
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