Easy
Swordtail Black (Xiphophorus helleri black)
22–27°C · pH 7–8 · 108L
£3.99
A hardy, colorful livebearer with elegant lyra fins that brings constant activity and easy breeding to a community aquarium. Easy care, peaceful. 23-27C, pH 7.0-8.5.
Care at a Glance
Scientific Name
Xiphophorus helleri
Max Adult Size
up to 6 cm
Lifespan
3 years
Care Level
Easy
Temperament
Peaceful
Temperature
23–27°C
pH Range
7–8.5
Hardness
5–30 dGH
Minimum Tank
90L
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
23–27°C
23°CIdeal27°C
pH Level
7–8.5
7Ideal8.5
Water Hardness
5–30 dGH
5 dGHIdeal30 dGH
Xiphophorus helleri
Swordtail Berlin Lyra (Xiphophorus helleri berlin lyra) - Tropical Fish for Sale UK
Beginner Friendly
Peaceful
£4.99/ fishSold Out
Shoal Pricing
— save up to 30%Shoaling fish: kept in a group they feel safer, stay calmer and show their best colour.
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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, colorful livebearer with elegant lyra fins that brings constant activity and easy breeding to a community aquarium. Easy care, peaceful. 23-27C, pH 7.0-8.5.
Care at a Glance
Scientific Name
Xiphophorus helleri
Max Adult Size
up to 6 cm
Lifespan
3 years
Care Level
Easy
Temperament
Peaceful
Temperature
23–27°C
pH Range
7–8.5
Hardness
5–30 dGH
Minimum Tank
90L
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.
Full Care Guide
Platy Fish Care: Tank Size, Temperature & Types
Platy is a trade name used for Xiphophorus maculatus, X. variatus and domestic forms. Start with at least three in a mature aquarium of at least 45 litres, verify the exact fish and measured water, and plan extra capacity before mixing sexes.
16 min readRead guide
Water Parameters
Maintain these water conditions for optimal health and vibrant colors
Temperature
23–27°C
23°CIdeal27°C
pH Level
7–8.5
7Ideal8.5
Water Hardness
5–30 dGH
5 dGHIdeal30 dGH
Looking for a lyretail swordtail that stays on the smaller side? At a listed 6 cm, the Berlin Lyra (Xiphophorus helleri berlin lyra) is noticeably more compact than the biggest members of its family while still carrying the elegant lyra finnage the name promises. That smaller stature makes it easier to house a lively group comfortably within the listed tank size, and an easy strain to recommend where space is the limiting factor but a lyretail is the goal. It brings constant activity to the middle of a community aquarium and is recorded as both easy to care for and easy to breed — a combination that makes it a very practical choice.
Its temperament is peaceful. Good company includes other peaceful livebearers, platies, mollies, peaceful tetras, danios and Corydoras — none of which threaten those lyre-shaped fins. Trouble comes from large aggressive cichlids, fin-nipping fish, predators and highly aggressive tank mates. Bear in mind too that very small fry or shrimp may be eaten by an opportunistic adult.
Give it 23–27 °C, a pH between 7.0 and 8.5 and hardness from 5 to 30 dGH, in an aquarium of at least 90 litres. Hold those numbers steady with a heater and a mature filter and there is very little left to go wrong. Feeding an omnivore takes no special effort, and around three years is a fair expectation for lifespan when conditions stay stable.
Berlin Lyra care essentials
- Compact: about 6 cm when grown
- 90-litre minimum aquarium
- Keep water at 23–27 °C
- pH 7.0–8.5; dGH 5–30
- Omnivore; rated easy care
- Peaceful; easy to breed; midwater; roughly 3 years
Notes before you buy
Pair the Berlin Lyra with calm companions and it will repay you with non-stop midwater movement. If breeding interests you, this is one of the more obliging strains, so include some plant cover where fry can shelter. A calm, planted layout shows the finnage at its best. On arrival, match temperature gradually before release and keep lighting low for the first few hours. Dispatch is via licensed live-animal courier and every order carries our live arrival guarantee.
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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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