Iriatherina werneri

Threadfin Rainbowfish

freshwater

Bioload 0.2

Beginner care

Melanotaeniidae

Care at a glance

Keep the full range stable rather than chasing a single perfect number. Acclimate slowly and test water before making any major change.

Temperature

26–30°C

pH range

6–8

Minimum tank

40 litres

Typical lifespan

4 years

Diet

Omnivore

Origin

Asia and Oceania

Adult size

Up to 4 cm

Community planning

No simple community match is listed. Review temperament, size and individual behaviour carefully.

Watch for

ichstress

Planning to add this species?

Use the compatibility checker before purchase, then quarantine new livestock where possible.

Check compatibility

Profile provenance

Transparent care data

IUCN LC

Taxonomy, adult size and available environmental fields come from FishBase release 26.07. Tank volume and any labelled planning baselines are conservative FishSnap estimates—not guarantees.

View FishBase species record