Lake Kutubu Rainbowfish (Melanotaenia lacustris) – 4–6cm+ Size Grades
22–24°C · pH 7–8 · 108L
£8.99
Photo coming soon
The size, price and care details on this page are for this listing.
Super Red Western Rainbowfish (Melanotaenia australis): Super Red is a selectively bred colour form with intense red fins and red-flushed flanks, much redder than the silvery standard form with its dark side stripe. About 11 cm adult. One fish per quantity. Keep at 22–27°C, pH 6.5–8.
listing-audit-2026-10-02moved-from-wrong-listing-2026-09-30needs-content-2026-09-30split-from-mixed-page-2026-10-02
Care at a Glance
Scientific Name
Melanotaenia australis
Max Adult Size
up to 11 cm
Care Level
Moderate
Temperament
Peaceful shoaling fish
Temperature
22–27°C
pH Range
6.5–8
Hardness
5–20 dGH
Minimum Tank
150L
Diet
An omnivore: feed a quality flake or small pellet daily, with small frozen or live foods a few times a week.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size above for the actual shipping size. Product-photo provenance and any image-specific limitations are stated on the listing.
Water Parameters
Temperature
22–27°C
22°CIdeal27°C
pH Level
6.5–8
6.5Ideal8
Water Hardness
5–20 dGH
5 dGHIdeal20 dGH
Melanotaenia australis
Super Red Western Rainbowfish (Melanotaenia australis 'Super Red')
Moderate Care
Peaceful
£18.99
1
Live arrival guaranteed. If they don’t arrive healthy, email us a short unboxing video the same day for a replacement or refund. Packed in oxygenated bags with insulation and heat packs when needed.
£19.95 tracked delivery — half price (£9.98) from £100.00, free from £200.00. One delivery charge however many fish you add — everything travels together with a licensed live-animal courier.
Read our reviews on Google (opens Google Business Profile in a new tab) or see verified buyer reviews and photos. Human support, careful packing and clear delivery updates for live aquatics.
Super Red Western Rainbowfish (Melanotaenia australis): Super Red is a selectively bred colour form with intense red fins and red-flushed flanks, much redder than the silvery standard form with its dark side stripe. About 11 cm adult. One fish per quantity. Keep at 22–27°C, pH 6.5–8.
listing-audit-2026-10-02moved-from-wrong-listing-2026-09-30needs-content-2026-09-30split-from-mixed-page-2026-10-02
Care at a Glance
Scientific Name
Melanotaenia australis
Max Adult Size
up to 11 cm
Care Level
Moderate
Temperament
Peaceful shoaling fish
Temperature
22–27°C
pH Range
6.5–8
Hardness
5–20 dGH
Minimum Tank
150L
Diet
An omnivore: feed a quality flake or small pellet daily, with small frozen or live foods a few times a week.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size above for the actual shipping size. Product-photo provenance and any image-specific limitations are stated on the listing.
Water Parameters
Maintain these water conditions for optimal health and vibrant colors
Temperature
22–27°C
22°CIdeal27°C
pH Level
6.5–8
6.5Ideal8
Water Hardness
5–20 dGH
5 dGHIdeal20 dGH
Super Red Western Rainbowfish: what you are buying
Super Red Western Rainbowfish (Melanotaenia australis) is a rainbowfish from north-western Australia (species range). Super Red is a selectively bred colour form with intense red fins and red-flushed flanks, much redder than the silvery standard form with its dark side stripe.
This listing is the Super Red form only; the standard Western Rainbowfish is a separate listing.
One fish per quantity. Order six or more to start a shoal.
| Scientific name | Melanotaenia australis |
|---|---|
| Family | Melanotaeniidae (rainbowfishes) |
| Origin | north-western Australia (species range) |
| Adult size | About 11 cm |
| Temperature | 22–27°C |
| pH | 6.5–8 |
| Hardness | 5–20 dGH |
| Aquarium | About 150 litres or more |
| Sold as | One fish per quantity |
What you receive
One fish per quantity. Choose the size, then the quantity. Colour and finnage develop as the fish matures; photos show the form you buy, not the individual fish.
Aquarium and water
An active shoaling fish: keep a group of six or more in a planted aquarium of about 150 litres or more with plenty of open swimming space. Keep 22–27°C, pH 6.5–8 and 5–20 dGH, with stable conditions and regular partial water changes. Add the fish only to a cycled, mature aquarium.
Feeding
An omnivore: feed a quality flake or small pellet daily, with small frozen or live foods a few times a week.
Tank mates and behaviour
Peaceful with community fish of similar size such as other rainbowfish, larger tetras, barbs and Corydoras.
Follow the arrival sequence before releasing the fish
Tropical Fish Co’s delivery and Live Arrival Guarantee policy explains the packing and arrival procedure. Livestock is hand-bagged in pure oxygen and placed in an insulated poly box, with a heat pack when the weather calls for it. Someone must be at the address to receive the parcel because live animals cannot be left unattended.
- Receive the parcel in person and start filming before opening it. Show the parcel still sealed with the outer box visible.
- Open the parcel in one continuous take. Keep filming until the fish can be seen inside the sealed bag before anything is disturbed.
- Float the bag for 20–30 minutes so the temperature equalises slowly.
- Do not pour the bag water into the aquarium. Release the fish without adding transport water to the established system.
If a Live Arrival Guarantee claim is required, contact us on the same day with the order number and the continuous unboxing video. Before the parcel arrives, confirm that ammonia and nitrite read zero and that the aquarium matches the water values on this page.
Frequently asked questions
What do I receive?
One fish per quantity. Choose the size, then the quantity.
How big does it grow?
About 11 cm as an adult.
What water does it need?
22–27°C, pH 6.5–8 and 5–20 dGH.
Public references
- FishBase: Melanotaenia australis — identity, native range and size.
- Seriously Fish: Melanotaenia australis — water conditions, aquarium size and behaviour.
- RSPCA aquarium environment guidance — biological filtration and the aquarium nitrogen cycle.
Customer Reviews
No reviews for this item yet. Bought one? Honest reviews only, good or bad.
What customers say about ordering from us
- 4 out of 5Verified buyer
I have a small group of long finned mountain minnows. So was delighted to be able to order ten of this variety to increase the genetics in my tank . The ones I recieved are healthy but it’s to early to give a verdict on wether they are of a long finned type since they are small currently.
Gordon Walker · 23 Sept 2026
- 5 out of 5Verified buyer
100% success travel and "installation". Pleased with quality of purchase. The Siamese fighter a bit "shy" so have not yet seen him at his best yet but looking good. Happy customer. GG
George E Garratt · 21 Sept 2026
Reviews of our shop, collected by Judge.me, an independent third-party review collector. Newest first.
