Threadfin Rainbowfish Tropical Fish Information

Iriatherina werneri
Threadfin Rainbowfish
Behaviour Peaceful, active, shoaling
Typical size 3cm
Max size 4cm
Tank Area Middle, top
Min Tank Size 30cm
Min Number 5
Temp Min: 24℃ Max: 29℃
Feeding Flake, frozen, live, dried foods. Fine frozen or live foods are important to maintain good health
pH Range 6-7.5
Hardness vs,s,m
Threadfin Rainbowfish Iriatherina werneri
  • Threadfin Rainbowfish Iriatherina werneri - thumbnail
  • Threadfin Rainbowfish Iriatherina werneri - thumbnail
  • Threadfin Rainbowfish Iriatherina werneri - thumbnail

Threadfin Rainbowfish (Iriatherina werneri)

Threadfin Rainbowfish Tropical Fish Learn all about the Threadfin Rainbowfish's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Threadfin Rainbowfish is the right fish for your aquarium.

These beautiful little rainbowfish are an great addition to a peaceful planted community aquarium. Ideally the aquarium should contain soft to medium water, vegetated and open areas and a fine and/or dark substrate. The fish are peaceful and males will actively display their colourful finnage both to attract females and as shows of strength to other males. Good general care and water conditions, as well as a correct diet will keep these fish in top condition.

Threadfin Rainbowfish Facts

Family Melanotaeniidae (Rainbowfishes) | Other names Werneri Rainbowfish | Origin New Guinea and Northern Australia | Breeding Egg scatterers, will spawn readily under good tank conditions. Spawning occurs over vegetation | Natural Water Conditions pH 6-8, very soft to soft | Natural Habitat Streams & rivers | Sexing Males are more colourful with long trailing fins and will display readily.

Threadfin Rainbowfish Help and Advice

If you have a question about keeping Threadfin Rainbowfish's then please use our Threadfin Rainbowfish help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.

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Check Tankmates for the Threadfin Rainbowfish fish species

Create a test community that includes the Threadfin Rainbowfish fish species and other types you'd like to introduce - Assess tank size suitability based on filter type and volume, possible negative interactions and warnings.

Please check your water type for compatibility with your fish, which can be found on the Threadfin Rainbowfish information box.
Tank Details
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If you'd like to talk about the "Threadfin Rainbowfish" with our users, then we have a buzzing community of fish enthusiasts where you can talk about tank issues, Threadfin Rainbowfish fish behaviour, Threadfin Rainbowfish tank stocking and any other issues related to the Threadfin Rainbowfish fish or other types you may have.

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