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Betta fish for sale

Compare species, fin forms and stated sex. Choose the fish that suits your aquarium.

Shop stockCare guide45 live listings
3 things to check before ordering
  • Choose the exact species, fin form and stated sex
  • Plan housing before buying — a pair is not a compatibility promise
  • Compare supplied sizes and the sale unit on each listing

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
Moderate

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

20–28°C · pH 6–8

£15.39
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

£12.49
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

£28.49
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

£10.99
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

£6.29
Black Crowntail Male Betta (Betta splendens) - dark male crowntail betta
Moderate

Black Crowntail Male Betta (Betta splendens)

26–28°C · pH 6–8

£15.69
Halfmoon Female Betta Mix (Betta splendens)
Moderate

Halfmoon Female Betta Mix (Betta splendens)

22–30°C · pH 6–8

£7.99
Super Delta Female Betta (Betta splendens) - Random Mix
Moderate

Super Delta Female Betta (Betta splendens) - Random Mix

26–28°C · pH 6–8

£6.79
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
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

£5.09
Arrival guaranteeSpecialist deliveryWelcome offer45 in stock

Before you choose from this collection

Choose a betta for the aquarium you can provide, not just its colour. This collection includes domestic Betta splendens and other Betta species; their requirements are not interchangeable. Check the scientific name, supplied size and any stated sex on the individual listing.

Halfmoon and plakat describe fin forms, while koi and other colour labels describe appearance. A shorter fin does not guarantee an easier fish. For domestic Betta splendens, plan one betta per aquarium as the safe default and read the housing guide before considering companions.

Use the current product cards for prices and availability. Only a listing explicitly sold as a pair or group includes that sale unit; buying two fish does not promise a breeding pair or that they can live together. Review delivery coverage and the Live Arrival Guarantee before ordering.

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Visual route into our wider UK live-fish range.

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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.
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.
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.

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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