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Perhaps the most graceful rainbowfish, the Threadfin Rainbowfish possesses long, flowing fin filaments and elegant swimming behavior. Males perform elaborate display rituals that are fascinating to observe. It thrives in calm, heavily planted aquariums.

Fish Info
Scientific Name Iriatherina werneri
Experience Level Beginner Friendly
Tank Size Need Small (Under 20 Gal)
Adult Size 9cm
pH Range 7.0 - 8.0
Swimming Zone Middle Dweller
Temperament Peaceful Community
Water Hardness 5 - 15 dGH
Type of Diet Omnivorous
Group Behavior Schooling
Temperature Range Standard Tropical (72°F - 78°F)

Threadfin Rainbow (Iriatherina werneri)

3/5 5 reviews

Perhaps the most graceful rainbowfish, the Threadfin Rainbowfish possesses long, flowing fin filaments and elegant swimming behavior. Males perform elaborate display rituals that are fascinating to observe. It thrives in calm, heavily planted aquariums.

Fish Info
Scientific Name Iriatherina werneri
Experience Level Beginner Friendly
Tank Size Need Small (Under 20 Gal)
Adult Size 9cm
pH Range 7.0 - 8.0
Swimming Zone Middle Dweller
Temperament Peaceful Community
Water Hardness 5 - 15 dGH
Type of Diet Omnivorous
Group Behavior Schooling
Temperature Range Standard Tropical (72°F - 78°F)
  • Availability: Out Of Stock

$3.95

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FAQ (Frequently Asked Questions)

Yes, you can order fish along with dry goods. However, if the dry goods are heavy or bulky, it may be more cost-effective to place two separate orders. In that case, you could ship the dry goods using a slower, more affordable shipping option.

If your order has not shipped yet, you can email us your correct shipping address, and we will update it for you.

On weekdays, if we receive your order before 2 p.m., it will be shipped out the same day. Dry goods are shipped from Monday to Friday. Orders that include livestock are only shipped from Monday to Thursday to avoid transit over the weekend.

At checkout, you can leave your request in the comments box.

Our locker boxes are located in the foyer of our store at 230 Hanlon Creek Blvd, Unit 107, Guelph. The room is accessible from 9 a.m. to 9 p.m.