(Devario spp.: D. assamensis, D. devario, D. malabaricus, etc.)
Taxonomic Troubles: Originally described as Perilampus aequipinnatus, later as Danio aequipinnatus. There
are many extremely similar species in this genus, some of which have been imported as giant danios over the
years. Years ago most hobbyists called any giant danio Danio malabaricus, and now many call them Devario
aequipinnatus, though few can describe the differences between the species. Most of the fish in the trade are
farm bred, and captive breeding stocks may well be hybridized, only confusing things more.
Size: 15 cm TL (about 6 inches).
Preferred Water Chemistry: Tropical freshwater, but does best at the lower range of tropical temperatures—
22° to 25°C ( 72° to 77°F). Not at all fussy about water chemistry.
Difficulty: Extremely hardy and adaptable.
Tank Setup: Must be kept in schools of a half dozen or more, and since they are very active, they require a large
aquarium with plenty of open space.
Description: Silvery body with a metallic blue band down the flanks, punctuated with yellowish posterior stripes
that degrade into dots and small bars anteriorly.
Feeding: Eats insects and detritus in the wild. Will eat all types of foods.
Breeding: Easily bred. A voracious egg eater, it is best spawned like other danios over a mesh barrier that allows
the eggs to fall through to the bottom.
Though only in the small-to-medium range for a cyprinid, this fish is certainly a giant compared to most other danios.
It provides the same activity and flash of metallic color that small danios do, but on a larger scale. This makes it a good
choice for communities with large fish like cichlids. As long as the cichlids can’t swallow the danios, there should be little
if any interaction, and the danios can serve as dither or target fish. Their generally peaceful nature makes them ideal as
the largest members of a community as well. One or two of these fish make a pathetic display compared to the dynamic
choreography of a school. Of course, a school of active 6-inch fish requires a larger tank than many community aquaria.
A tank with a minimum length of 36 to 48 inches is necessary to provide them adequate swimming room.