Easy
Emperor Tetra Black (Nematobrycon palmeri black)
23–27°C · pH 6.5–7.5 · 81L
£5.99
A hardy, active South American schooling tetra with a peaceful nature and attractive two-spot patterning. Moderate care, peaceful. 22-28C, pH 5.5-7.5.
Care at a Glance
Scientific Name
Astyanax bimaculatus
Max Adult Size
up to 12 cm
Lifespan
5 years
Care Level
Moderate
Temperament
Peaceful
Temperature
22–28°C
pH Range
5.5–7.5
Hardness
2–15 dGH
Minimum Tank
120L
Diet
Omnivore
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller. Product-photo provenance and any image-specific limitations are stated on the listing.
Water Parameters
Temperature
22–28°C
22°CIdeal28°C
pH Level
5.5–7.5
5.5Ideal7.5
Water Hardness
2–15 dGH
2 dGHIdeal15 dGH
Astyanax bimaculatus
Banded Astyanax (Astyanax sp.) - Tetra Fish for Sale UK
Moderate Care
Peaceful
£3.99/ fishSold Out
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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.
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A hardy, active South American schooling tetra with a peaceful nature and attractive two-spot patterning. Moderate care, peaceful. 22-28C, pH 5.5-7.5.
Care at a Glance
Scientific Name
Astyanax bimaculatus
Max Adult Size
up to 12 cm
Lifespan
5 years
Care Level
Moderate
Temperament
Peaceful
Temperature
22–28°C
pH Range
5.5–7.5
Hardness
2–15 dGH
Minimum Tank
120L
Diet
Omnivore
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller. 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
22–28°C
22°CIdeal28°C
pH Level
5.5–7.5
5.5Ideal7.5
Water Hardness
2–15 dGH
2 dGHIdeal15 dGH
Marketed for its banded patterning, the Banded Astyanax (Astyanax sp.) is an active South American characin that brings the same restless energy as its larger relatives to a roomy community tank. It reaches around 12cm, putting it firmly in the bigger-tetra bracket where swimming room matters more than fancy decor.
Peaceful but lively, this is a schooling fish that should be kept in a group so its natural movement and social behaviour can play out. It sits in the middle region as an adaptable omnivore, accepting a varied diet without fuss. We list it at a moderate care level, so a stable, well-filtered tank and sensible stocking will keep it in good form.
Its pace and size make tank-mate choice important: companions need to hold their own around a fast, hungry schooler rather than be crowded out at feeding time.
Keeping this tetra
- Adult size around 12cm; lifespan up to 5 years
- Temperature 22-28°C, pH 5.5-7.5, hardness 2-15 dGH
- Minimum 120-litre tank with open swimming space
- Omnivore - feed a varied flake, pellet and frozen diet
- Moderate care; peaceful, middle-region schooling characin
Like its relatives, this is a fish that needs room to move. A 120-litre or larger tank with open swimming space in the middle region suits its active habits, and it copes with a broad range of water - 22 to 28°C, pH 5.5 to 7.5 and hardness from 2 to 15 dGH. Its moderate care rating simply reflects the need for stable conditions and sensible, group-based stocking.
Feeding is easy for an adaptable omnivore: a varied diet of flake, pellet and frozen foods keeps it healthy. Kept as a school it shows its best, coordinated behaviour, and with a potential five-year lifespan it settles in as a durable, energetic resident for a spacious community where its tank mates can keep pace.
Tank mates
Suitable companions are other robust peaceful schooling fish of similar size, Corydoras catfish, peaceful medium-sized loricariids and non-aggressive community fish that tolerate active schooling fish. Avoid large predatory fish, aggressive cichlids, fin-nipping species, very small fry or shrimp, and slow, long-finned fish that may be stressed or nipped. Orders are delivered through a licensed live-animal courier, with our live arrival guarantee in place.
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What customers say about ordering from us
4.6 on Google Maps, rated 4.6 out of 5 (opens in a new tab)4.4 · 91 shop reviews read them, rated 4.4 out of 5
- 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
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