All fish / Danionidae

Blyth's devario

Devario affinis

Also known as blyth's danio, devario affinis, danio affinis, affinis danio

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Blyth's devario is a slim, active danionin that reaches about 8 cm. Like its relatives, it is silvery, with bluish and yellowish horizontal stripes along the flanks. It is rarely sold under this name and little is recorded about it, so it mainly interests devario fans who enjoy fast, hardy shoaling fish for the upper water.

Care at a glance

Care level

Easy

Temperament

Peaceful

Adult size

7 cm

Temperature

20 to 26 °C

pH

6.5 to 7.5

Smallest tank

120 litres

Keep as

Shoal of 8 or more

Diet

Omnivore: quality flakes and granules, frozen bloodworm, daphnia and brine shrimp, small live insects

Swims

Top of the tank

Lifespan

4 to 6 years

Water

Freshwater

Wild range

India (poorly documented; possibly also Myanmar)

Breeding

It is an egg scatterer that gives no parental care. Breeding is likely to be similar to other devarios: condition the fish well, then give them a spawning tank with fine-leaved plants or mesh. Remove the adults after spawning so they do not eat the eggs.

Good to know

The species is poorly known and is listed as Data Deficient by the IUCN, so fish sold under this name may in fact be D. aequipinnatus or another look-alike devario. It jumps and needs a long tank with a tight lid.