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Buy Betta Fish UK — Live Betta for Sale

Halfmoon, plakat, koi, giant and wild-type Betta splendens, males and females, tail type and size stated per listing. Bagged singly, live arrival covered.

Shop current stockRead the guide45 live listings
3 things to check before ordering
  • Check the listing for the exact sale unit and current price
  • Match adult size, water needs and social behaviour
  • Prepare a fully cycled aquarium before arrival
Arrival guaranteeSpecialist deliveryFirst-order offer45 in stock

Current Betta Fish listings

45 products

Red-and-white Betta with a broad fan-shaped tail and large white pectoral fins, swimming between driftwood roots
−15%
Moderate

Super Delta Big Ear Male Betta Mix (Betta splendens)

26–28°C · pH 6–8

£15.29£17.99
Libby Betta, Split-Tailed Betta White - XL — betta fish temperature — Betta Fighter fish UK — representative image
−12%
Moderate

Male Libby Split-Tailed White XL Betta (Betta sp.)

20–28°C · pH 6–8

£14.07£15.99
Illustrative male Super Delta Betta (Betta splendens) in blue colouration
Moderate

Super Delta Male Betta Mix (Betta splendens) – Single Male

24–27°C · pH 6–8 · 20L

£15.99
Halfmoon Plakat male Betta splendens with yellow body and blue tail patterning
−12%
Easy

Halfmoon Plakat Male Betta (Betta splendens)

24–30°C · pH 6–8 · 20L

£20.23£22.99
Veiltail Green Male Betta (Betta splendens), XL
−15%
Moderate

Veiltail Green Male Betta (Betta splendens), XL

22–30°C · pH 6–8

£9.34£10.99
Crowntail Female Betta (Betta splendens)
Moderate

Crowntail Female Betta (Betta splendens)

22–30°C · pH 6–8

£9.99
Koi Double Tail Plakat Male Betta with vivid red, blue and white marbling near wood and gravel
Moderate

Koi Double Tail Plakat Male Betta (Betta splendens)

26–28°C · pH 6–8

£40.99
Half-moon Male Betta — representative image
Moderate

Halfmoon Male Betta Mix (Betta splendens)

26–28°C · pH 6–8

£33.99
Representative XL male Double Tail Betta with divided caudal fin and mixed orange, blue and black colour
Moderate

Double Tail Male Betta Mix (Betta splendens) XL

24–27°C · pH 6–7.8 · 20L

£15.99
A red Crowntail Betta with spread spiky fins in front of driftwood and green plants.
−13%
Moderate

Crowntail Male Betta (Betta splendens)

26–28°C · pH 6–8 · 20L

£12.17£13.99
Peaceful betta with turquoise scales and broad red fins swimming among dark wood

Peaceful Betta / Crescent Betta (Betta imbellis)

24–28°C · pH 6–7 · 41L

£10.99
Veiltail Nemo Male Betta with flowing orange, white and black fins among plants and wood
Moderate

Veiltail Nemo Male Betta (Betta splendens)

22–30°C · pH 6–8

£35.99
Butterfly Halfmoon Betta Male (Betta splendens)
Moderate

Butterfly Halfmoon Betta Male (Betta splendens)

26–28°C · pH 6–8

£37.99
Double Tail Female Betta Mix (Betta splendens) – Single Female
Easy

Double Tail Female Betta Mix (Betta splendens) – Single Female

24–30°C · pH 6–7.5 · 20L

£8.99
Black Crowntail Male Betta (Betta splendens) - dark male crowntail betta
−12%
Moderate

Black Crowntail Male Betta (Betta splendens)

26–28°C · pH 6–8

£16.71£18.99
Halfmoon Female Betta Mix (Betta splendens)
Moderate

Halfmoon Female Betta Mix (Betta splendens)

22–30°C · pH 6–8

£13.99
Super Delta Female Betta (Betta splendens) - Random Mix
Moderate

Super Delta Female Betta (Betta splendens) - Random Mix

26–28°C · pH 6–8

£10.99
Plakat Male Betta Mix (Betta splendens)
−15%
Moderate

Plakat Male Betta Mix (Betta splendens)

26–28°C · pH 6–8

£16.99£19.99
Betta spl. male plakat koi — betta fish temperature — Betta Fighter fish UK — representative image
Moderate

Plakat Koi Male Betta (Betta splendens)

26–28°C · pH 6–8 · 41L

£33.99
Yellow Hellboy HMPK Male Betta with a blue, black and yellow fan-shaped tail among plants and wood
Moderate

Yellow Hellboy HMPK Male Betta XL (Betta splendens)

26–28°C · pH 6–8

£33.99
Blue veiltail betta with long flowing fins and red pelvic fins, swimming between driftwood roots in a planted aquarium
−15%
Easy

Male Blue Veiltail Betta (Betta sp.)

20–28°C · pH 6–8

£9.34£10.99
Big Ear Plakat Male Betta Mix (Betta splendens)
Moderate

Big Ear Plakat Male Betta Mix (Betta splendens)

26–28°C · pH 6–8 · 20L

£19.99
Male Betta (Betta splendens)
−10%
Easy

Nemo Long-Tail Male Betta (Betta splendens)

24–30°C · pH 6–7.5 · 20L

£47.69£52.99
Betta (Betta splendens)
Moderate

Female Betta Mix (Betta splendens)

26–28°C · pH 6–8

£5.99

Before you choose from this collection

Betta splendens, the Siamese fighting fish, grows to about 6-7 cm, lives around 3-5 years and needs a heated, filtered, fully cycled aquarium of about 20 litres or more at 24-28°C — one male per tank. Every betta here is live stock sold by strain and sex, priced on its card and sent by licensed live-animal courier with our Live Arrival Guarantee; halfmoon, plakat, koi, giant, alien and wild-type forms appear below whenever they are in stock.

Browse current Betta splendens and other Betta listings, including halfmoon, plakat, koi, giant, alien and wild-type bettas alongside rotating colour forms. Check each product card for the current price, sale unit, availability and any sex or strain information confirmed for that listing; collection imagery may be representative.

The main betta types explained: halfmoon bettas spread the tail into a 180-degree fan and need calm water so the fins are not torn; plakats are the short-finned, hardier form closest to the wild fighter and cope best with a little flow; crowntails carry spiky, reduced webbing that shows every ray; koi and galaxy bettas are marbled colour lines whose pattern keeps shifting for months; giant bettas reach 7 to 9 cm and need a bigger tank than the usual guidance; alien bettas are metallic mesh-patterned hybrids with wild-type temperament; and wild-type species such as Betta imbellis and Betta smaragdina are calmer, can sometimes be kept in pairs, and want cooler, softer water than the fancy lines.

Eligible live-animal orders use specialist delivery and protective packaging. Review the delivery page for current postcode coverage, dispatch information, acclimation steps and Live Arrival Guarantee terms before ordering.

Prepare a fully cycled, heated and filtered aquarium that suits the exact fish. The safest default is one betta per aquarium; read the reviewed care guide for surface access, flow, cover and compatibility before choosing tank mates.

Explore related collections

Visual route into our wider UK live-fish range.

Gouramis & Labyrinth Fish

Gouramis & Labyrinth Fish

Gouramis and labyrinth fish for sale UK — Pearl, Dwarf, Honey, Kissing, Giant and rare species. Peaceful surface-breathers.

Angelfish

Angelfish

Koi, marble, platinum and zebra angelfish (Pterophyllum scalare), juvenile to near-adult, size stated per listing. Tall tanks, UK courier delivery.

Neon Tetra

Neon Tetra

Neon tetras (Paracheirodon innesi) in shoal-size groups — the classic community fish for 60-litre tanks and up, kept at 20–26 °C. Live arrival guarantee.

Guppy

Guppy

Fancy guppies bred for colour — Moscow, Cobra, Dumbo ear and Endler lines as males, females or pairs. Match listing water needs to your tank water.

Endler Guppy

Endler Guppy

Wild-type and selectively bred Endler guppies (Poecilia wingei) for nano and planted tanks — small and peaceful. Males, females and trios, size stated.

Molly Fish

Molly Fish

Black, gold, marble and sailfin mollies, plus balloon and lyretail forms: peaceful livebearers that prefer harder water. Price, size and sex on every listing.

Platy Fish

Platy Fish

Sunset, Mickey Mouse and Wagtail platies (Xiphophorus maculatus) — the easiest livebearer for a first community tank, happy at 20–28 °C. Singly or in trios.

Corydoras

Corydoras

Shop current Corydoras catfish listings in the UK. Compare scientific identity, size and sale unit, with price and availability shown per product.

Frequently asked questions

Prices vary with the fish, size, strain and current availability. Use the live product cards for the current price and sale unit rather than relying on a static range.
Do not house two male Betta splendens together. A male and female should not be treated as a routine community pairing, and female groups can also become aggressive. The safe default is one betta per aquarium, with a separate, cycled backup aquarium available for any attempted advanced arrangement.
Choose a proper filtered, heated aquarium with a lid, gentle flow, surface access and enough stable space for the adult fish. Requirements can differ between Betta species and individuals, so check the exact listing and reviewed care guide instead of applying one collection-wide volume rule.
Online delivery can be suitable when the aquarium is ready and current packing, courier and acclimation instructions are followed. Check the delivery page for postcode coverage, the current schedule and Live Arrival Guarantee terms.
Fin length and colour depend on the individual and strain, not sex alone; plakats, for example, are short-finned. Buy a stated sex only when the exact listing confirms it, and plan to keep one betta per aquarium by default.
Use a complete food suitable for the exact Betta species and offer portions the fish can finish without leaving waste. Follow the food label and care guide, vary suitable foods where appropriate and adjust feeding to the fish rather than using one fixed pellet count.
Varieties change with the live catalogue. The current product cards are the source of truth for available halfmoon, plakat, koi, alien, giant or wild-type listings; if a named form is absent, it is not being presented as current stock.
Halfmoon describes a broad caudal-fin form, while plakat describes a shorter-finned form. Colour labels can occur across fin forms. Check the individual listing and care information because fin form does not remove the need for warm, filtered, fully cycled water.
Check the delivery page for current postcode coverage and service availability. Prepare the aquarium before ordering and follow the current packing, arrival and Live Arrival Guarantee instructions.
Betta splendens originates in mainland Southeast Asia and is adapted to warm, often slow-moving shallow waters. Bettas have a labyrinth organ and need unobstructed access to the surface as well as suitable water quality; the care guide covers aquarium conditions in detail.
Cycle the aquarium fully before adding the fish, provide stable heated water, gentle filtration, surface access, cover and a secure lid. Confirm the exact fish's temperature, adult size and water requirements in the listing and care guide before choosing the aquarium.
Directly from this page: every betta listed is live stock in our own system, sold by strain and sex, and sent by licensed live-animal courier with the Live Arrival Guarantee. There is no shop to visit — we are online only — so the same fish is available whether you are in London, Manchester, Glasgow or a rural postcode our courier covers.
Yes. Siamese fighting fish is the older common name for Betta splendens, the species behind almost every halfmoon, plakat, crowntail, koi and giant betta sold in the UK. Wild bettas such as Betta imbellis and Betta smaragdina are separate species in the same genus.
A plakat or a female Betta splendens. Both have shorter fins that are less prone to tearing and fin rot, tolerate a gentle filter current, and are less stressed by normal tank life than a long-finned halfmoon. Whichever you choose, the fish needs a heated, filtered, cycled tank of about 20 litres or more — not a bowl.

Watch: Betta Fish in 60 seconds

Short clips from our own channel — the things keepers most often get wrong, answered in a minute.

The Mirror Is Not Exercise For Your BettaMirror-flaring is widely recommended as betta exercise. The evidence does not support it — what a flare actually is, and what to do instead.
Betta fish were invented — and the tail is from the 1980sBetta splendens has been selectively bred for about a thousand years; the long fancy tails are recent, and they change how the fish should be kept.

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