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 in Tank 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 tank mates for the Threadfin Rainbowfish fish species

You are in the thinkfish community creator for the Threadfin Rainbowfish fish species, you can learn all about how the tool works in assessing fish tank mate compatibility at the link provided or use the tool tips provided to guide you. Create a test fish community that includes the Threadfin Rainbowfish species and any other types of fish or crustacean you'd like to introduce - You can assess the best companions, tank size suitability, stocking levels based on filter type and volume and possible negative interactions and warnings as you build up your aquarium.

Please do check your water type for compatibility with your fish, which can be found on the Threadfin Rainbowfish information box above and your local water company providers website. Don't waste your money and endanger your fish!
Tank Details
question mark  Rename your tank:
question mark  Length: (cm)
question mark  Volume: (Litres)
question mark  Filter type:

* Recent changes to stocking & filter advice October 2018
* This fishtank will only last for this session - to save your tank please Join/Log in

question mark  Max Stocking level: 0cm
0-1 months 20%: 0cm
1-3 months 40%: 0cm
3-6 months 60%: 0cm
question mark  Current stock level: 0cm
Stock percentage: 0%
question mark  Suggested maximum
fish size for your tank:
My Fishtank Quantity Stock cm

There are currently no fish in your fish tank. To add fish, you can click the 'Add the Threadfin Rainbowfish to your tank' button. Or search for a different fish using the options presented above

sample fish tank
See an example tank as it would show on a user profile with enabled settings and community tanks.

To save your tank details in the Fish Community Creator you must be logged in CLICK HERE to login or create an account further down the page below

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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