Max Size: 6cm

Zebra Danio (Brachydanio rerio)

Zebra Danios are a favourite hobbyist because of their ease of care, charm, and grace. These fish are easy to recognize by their distinctive horizontal stripes. Blue-purple horizontal lines that run from gill to tail, setting off the slim, compressed, golden-silvery body of this attractive fish that looks similar to that of a zebra

Zebra Danios are peaceful and will get along with most tankmates; however, they may nip fins of individual species such as betas and angelfish, but that aside they make a great addition to the community tank.

They are very hardy and can withstand an impressive range of water conditions and temperatures.

This species will do just fine without a heater as they are pretty comfortable at low temperatures.


Longfin Zebra Danio
Zebra Danio
Zebra Danios
Zebra Danio
Longfin Zebra Danio
Longfin Zebra Danio
Longfin Zebra Danio
Longfin Zebra Danio

Zebra Danio Variants

GloFish Longfin Zebra Danio
GloFish Zebra Danio
Gold Longfin Zebra Danio
Longfin Zebra Danio
Quick Facts
Scientific NameBrachydanio rerio
Other NamesZebra Fish, Striped Danio
OriginsBangladesh, Bhutan, India, Myanmar, Nepal, Pakistan
Aquarium LevelMiddle - Top
Best kept asGroups 6+
Lifespan2 - 4 years
Water Parameters
Water TypeFreshwater
PH6.5 - 7.0
GH5 - 12
KH1 - 5
TDS100 - 500
64 - 74℉
17.8 - 23.3℃


In the home aquarium, the Zebra Danio will readily accept most good quality dried foods such as granules, flakes and sinking pellets. These modern food products have been developed to provide all adequate nutrition to maintain your fish's health and dietary requirements.

Providing additional foodstuffs such as live, frozen, and freeze-dried meals such as bloodworm, daphnia, and tubifex once or twice a week will provide additional benefits to your fish's health and well-being but is not a must for this fish.

It should be noted that bloodworms should only be given as an occasional treat and should not be used as the staple diet as they are difficult for fish to digest and can potentially cause blockages.

This fish is an omnivore in the wild, meaning it will consume some vegetable matter. Although most modern fish foods take this into account and include them in their products, you can still supplement your fish's diet with blanched vegetables such as spinach, broccoli, and zucchini. Ensure you do not overfeed your fish and remove any leftovers the following day.

Tank Mates

2 interesting tank mate ideas for the Zebra Danio could include:

Dwarf Gourami(Trichogaster lalius)
Frail Gourami(Ctenops nobilis)

Sexual Dimorphism

There isn't much that defines a male from a female species except that the female is more rounded and slightly larger than the male.

In contrast, the male is more streamlined and torpedo-shaped.

You will not be able to differentiate until they are adults as they look identical to juveniles.

The Zebra Danio has been featured on the following stamps

Vietnam - 1984

Frequently asked questions

Are Zebra Danios a shoaling fish?

Yes, Zebra Danios are shoaling fish that need to be housed in groups of six or more individuals.

Are Zebra Danios aggressive?

You may notice that Zebra Danios chase each other around the tank; you do not have to worry as this is a hierarchical arrangement of dominance settled through playful non-aggressive behaviour. However, whilst Zebra Danios are peaceful, social fish, they can exhibit aggressive behaviour towards slow-moving or long-finned fish species, and you may see them frequently biting at their fins.

Are Zebra Danios compatible with other fish species?

Yes, Zebra Danios are a peaceful community fish; however, it would be better if you did not keep them with fish that have flowing fins or are slow-moving as they may harass them and fin nip.

How do you sex Zebra Danios?

Sexing Zebra Danios is pretty straightforward. Males will have torpedo-shaped bodies with illusive golden stripes between the zebra stripes. Males also have a prominent genital papilla in front of their anal fin. In contrast, females are silvery in colour. They have more rounded, plumper bodies, and their stripes are silver rather than golden like the males.

What should you feed your Zebra Danios?

Zebra Danios are not fussy when it comes to food; however, if you would like your fish to be as happy and as healthy as possible, it's continually advised that you try to mimic the diet they would naturally live on in the wild. In nature, their diet consists of crustaceans, small insects, worms and algae. However, not every fish keeper will have the funds nor the inclination to feed their fish nothing but live foods; therefore, high quality dried foods such as flakes or granules will more than suffice. Nevertheless, we highly recommend that you supplement their diet with the occasional live food or frozen foods.

What size aquarium is required for Zebra Danios?

The ideal aquarium for Zebra Danios would be 45 litres or more; this will give them plenty of swimming space to shoal. Zebra Danios can grow up to 6 cm in length and are very active species. In smaller tanks, Danios will be unhappy and will become frustrated bullies.

Other Danios of interest

Assam Danio(Devario assamensis)
Barred Danio(Devario pathirana)
Bengal Danio(Devario devario)
Black Barred Danio(Danio absconditus)
Blood Tailed Danio(Devario annandalei)
Blue Danio(Danio kerri)
View all Danios
Date Added: 27/07/2020 - Updated: 11/08/2022 15:59:50