Max Size: 8cm

Bengal Danio (Devario devario)

The Bengal Danio makes a stunning addition to the community aquarium. They are hardy, very active and relatively peaceful. These Danios are not an aggressive fish but may upset timid, slow-moving tankmates with their constant activity and vigorous feeding behaviour. Therefore, it is most suited to larger aquariums containing robust, similarly-sized fishes.

Bengal Danios are a schooling species by nature, and you should ideally keep them in groups of 8 to 10 individuals. Maintaining them in decent numbers will make the fish less nervous and result in a more effective, natural-looking display. Since these fish are sociable, they do not fare very well if kept singly.

Any aggression will also be restrained as the fish concentrate on maintaining their hierarchical position within the group, and males tend to display better colours in rivals' presence.

The Bengal Danio is an elongated fish with a high-back and lateral compression. Their body is rounded, and they have no barbels. The colour varies depending on the population.

Their back and belly are golden-brown, and the flanks are blue with some subtle, transverse yellow stripes. They present a broad, dark blue bar on each side that extends from the rear part of the mid-section to the fork of the caudal fin. The fins are usually transparent.


Bengal Danio
Bengal Danio
Bengal Danio
Bengal Danio
Quick Facts
Scientific NameDevario devario
Other NamesSind Danio, Bengal Turquoise Danio
OriginsAfghanistan, Bangladesh, India, Nepal, Pakistan
Aquarium LevelTop
DifficultyBeginner - Intermediate
Best kept asGroups 8+
Lifespan3 - 5 years
Water Parameters
Water TypeFreshwater
PH6.0 - 8.0
GH5 - 20
TDS36 - 268
59 - 79℉
15 - 26.1℃


In the home aquarium, the Bengal 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

1 interesting tank mate ideas for the Bengal Danio could include:

Banded Gourami(Trichogaster fasciata)

Sexual Dimorphism

It is easy to differentiate male from female Bengal Danios. Males are typically slimmer, smaller, and far more colourful than females, whereas females are rounder bellied, less colourful and slightly larger than males.

Frequently asked questions

Are Bengal Danios a shoaling fish?

Bengal Danios are an active, shoaling species that you should maintain in groups of 6 individuals, preferably more that way, your aquarium will have a more natural-looking display, and your fish will be less nervous.

Are Bengal Danios compatible with other fish species?

Bengal Danios are not aggressive fish; however, they may upset slow-moving or timid tankmates with constant activity and vigorous feeding behaviour. Therefore, it would be better to have a larger aquarium containing similarly sized, robust fish species such as Barbs, Cichlids, Catfish and larger Tetras.

How do you sex Bengal Danios?

It is pretty simple to distinguish male from female Bengal Danios. The males are typically much more vibrantly coloured and somewhat smaller than females, and females have rounder bellies than males.

What aquarium setup is best for my Bengal Danios?

You need to make sure that your aquarium is well established with good water quality as Bengal Danios naturally occur in pristine habitats and are intolerant to organic pollutants. Then, we recommend that you design the tank to mimic a flowing river or stream with a substrate of different sized, water-worn rocks, fine gravel, sand or some small boulders, as well as some driftwood branches or roots. A majority of aquatic plants will not survive in such surroundings; however, hardy plant types such as Bolbitis, Microsorum or Anubias can be grown attached to the decor.

What area of the tank do Bengal Danios hang out in?

Bengal Danios prefer to shoal and swim in the top levels of an aquarium.

What should you feed your Bengal Danios?

In the aquarium Bengal Danios are not picky when it comes to food. You can use high quality dried products as the staple diet; however, this should be given alongside regular meals of small live and frozen fares such as artemia, daphnia, bloodworm and suchlike. This will provide your fish with the best condition and colours.

Other Danios of interest

Assam Danio(Devario assamensis)
Barred Danio(Devario pathirana)
Black Barred Danio(Danio absconditus)
Blood Tailed Danio(Devario annandalei)
Blue Danio(Danio kerri)
Celestial Pearl Danio(Danio margaritatus)
View all Danios
Date Added: 08/02/2021 - Updated: 11/08/2022 14:01:33