Easy
Swordtail Marry Gold (Xiphophorus helleri mary gold)
22–27°C · pH 7–8 · 108L
£3.99
A hardy, colorful lyretail swordtail that brings constant activity and easy breeding to a peaceful 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 — 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
23–27°C
23°CIdeal27°C
pH Level
7–8.5
7Ideal8.5
Water Hardness
5–30 dGH
5 dGHIdeal30 dGH
Xiphophorus helleri
Swordtail Marry Gold Lyra (Xiphophorus helleri mary gold lyra) - Tropical Fish for Sale UK
Beginner Friendly
Peaceful
£8.99Sold Out
Shoal Pricing
— save up to 30%Shoaling fish: kept in a group they feel safer, stay calmer and show their best colour.
Your shoal
£72.00You save £17.90
Get a product-specific stock alert
Confirm your email, then we’ll send an availability message for this exact item if it returns within 180 days.
This request is only for this product—no newsletter or other promotions. A mail-provider retry may very rarely duplicate the same availability message. Unconfirmed addresses are removed after 48 hours. See our privacy policy.
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.
A hardy, colorful lyretail swordtail that brings constant activity and easy breeding to a peaceful 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 — pick a size above for the actual shipping size. 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
Take the golden colouring of the Marry Gold line and finish it with a sweeping lyre-shaped tail: that is the Marry Gold Lyra Swordtail (Xiphophorus helleri mary gold lyra) in a single sentence. The lyra finnage doubles the visual impact of the gold without adding a gram of difficulty to the keeping — if you already like the colour, the fins are a free upgrade. Listed at about 6 cm, this colourful lyretail fills the middle of a community aquarium with constant activity, breeds readily, and asks very little in return — care is rated easy across the board.
Unlike some bolder swordtail strains, this one is recorded as peaceful, which makes it the easier choice of the two Marry Gold forms for a mixed community — its standard-finned counterpart is logged as semi-aggressive. It settles in well beside other peaceful livebearers — platies, mollies and guppies — with Corydoras and Otocinclus covering the lower levels. Keep it away from large aggressive cichlids, fin-nipping fish, very large predators and highly aggressive barbs, and avoid pairing it with anything that needs soft, acidic water.
Provide a 90-litre aquarium at 23–27 °C, with a pH between 7.0 and 8.5 and any hardness from 5 to 30 dGH. Keep the routine boring — same temperature, same weekly change, same varied feeding — and this strain simply gets on with looking good. Around three years is the typical lifespan on record for an omnivore kept this way.
Looking after this strain
- About 6 cm when mature
- Minimum tank: 90 litres
- Keep at 23–27 °C
- pH 7.0–8.5 alongside hardness of 5–30 dGH
- Omnivorous and easy-care
- Peaceful; breeds readily; holds midwater
Ordering and stocking notes
Golden fish light up planted tanks, and the lyretail adds a flourish you simply do not get from standard-finned forms. Choose calm companions, protect those fins from nippers, and the display takes care of itself. Order alongside its listed companions and the whole community can settle in together. New fish appreciate a gentle, gradual introduction and a calm first evening in the tank. Sent by licensed live-animal courier; every order includes our live arrival guarantee.
Customer Reviews
No reviews for this item yet. Bought one? Honest reviews only, good or bad.
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
Reviews of our shop, collected by Judge.me, an independent third-party review collector. Newest first.