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Tropical Fish for Sale UK

Find tropical freshwater fish for your aquarium, then compare adult space, water and social needs.

Browse fishFreshwater fish

Browse tropical fish

1,729 listings · 915 available. Sold-out choices stay visible.

1729 products

Blue Moscow male fancy guppy with broad turquoise fins swimming among dark wood and plants
Easy

Blue Moscow Male Guppy (Poecilia reticulata)

22–28°C · pH 7–8 · 45L

£4.09
Neon Tetra with a bright blue stripe and red rear body against a softly blurred background
Moderate

Neon Tetra (Paracheirodon innesi)

21–25°C · pH 5–7

£1.89

Also in packs from £21.49

Black Corydoras
Moderate

Black Venezuela Corydoras (Corydoras sp. Black Venezuela)

22–26°C · pH 6–7.8 · 75L

From £6.79Some sizes on sale

Also in packs from £55.49

Kuhli Loach with bold dark bands swimming between wood and green plants

Kuhli Loach (Acanthophthalmus kuhli)

24–27°C · pH 6.5–6.5

£2.39

Also in packs from £6.19

Albino Bronze Cory resting on pale sand in front of dark wood and green plants, with a cream body and red eye

Albino Bronze Cory (Osteogaster aenea)

22–27°C · pH 6–8 · 72L

£2.99
Cardinal Tetra in side profile with a blue stripe and full-length red lower body on black
Moderate

Cardinal Tetra (Paracheirodon axelrodi)

23–27°C · pH 5.5–7 · 60L

£2.54

Also in packs from £9.09

Spotted Bristlenose Pleco with long snout bristles swimming above gravel and wood
Moderate

Bristlenose Pleco (Ancistrus sp.)

22–27°C · pH 6–8

From £3.51Some sizes on sale
Marble Angelfish (Pterophyllum scalare)
Moderate

Marble Angelfish (Pterophyllum scalare)

24–27°C · pH 6.5–8 · 200L

£3.99
Red Turquoise Discus with blue maze-like stripes among green plants and wood above pale gravel

Red Turquoise Discus (Symphysodon spp.)

26–30°C · pH 6–7.5

From £37.99Some sizes on sale
Black Ruby Barb swimming among green plants and twisting wood, with a deep red body, dark scales and black fins

Black Ruby Barb (Pethia nigrofasciata)

22–26°C · pH 6–6.5 · 72L

From £3.19Some sizes on sale

Also in packs from £9.59

Side view of a Super Blue Emperor Tetra with a vivid blue body in an aquarium
−40%
Moderate

Super Blue Emperor Tetra (Inpaichthys kerri)

24–27°C · pH 5.5–7 · 68L

£2.99£4.99
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
Longfin Ram Cichlid (Mikrogeophagus ramirezi)

Longfin Ram Cichlid (Mikrogeophagus ramirezi)

27–30°C · pH 4–7 · 54L

From £6.99Some sizes on sale

Also in packs from £11.99

Albino Bronze Cory (Corydoras aeneus)
−10%
Easy

Bronze Corydoras, Bronze Cory Catfish (Corydoras aeneus)

22–26°C · pH 6–7.5 · 60L

£3.59£3.99
Blue Wagtail Platy with a pale metallic-blue body and a black dorsal fin and tail, in a planted aquarium
Easy

Blue Wagtail Platy (Xiphophorus maculatus)

20–26°C · pH 7–8.2 · 54L

£3.59
One Pearl Danio with reflective blue-pink scales beside driftwood and green plants

Pearl Danio (Brachydanio albolineatus)

16–25°C · pH 6–8

£2.89
Harlequin swimming left among green plants and dark aquarium wood
Easy

Harlequin (Rasbora heteromorpha)

21–28°C · pH 5–7.5 · 54L

£2.59

Also in packs from £12.99

Electric Blue Acara swimming among green plants, rocks and dark wood
Easy

Electric Blue Acara (Andinoacara pulcher) – Neon Blue, 2–7cm Sizes

22–23°C · pH 6.5–8

£6.19
Oscar (Astronotus ocellatus)
−14%
Advanced

Tiger Oscar Cichlid (Astronotus ocellatus)

20–28°C · pH 6–7.5 · 540L

£9.45£10.99
Peppered Corydoras with spread fins above dark gravel, wood and green plants behind
Moderate

Peppered Corydoras (Corydoras paleatus)

22–23°C · pH 6–7 · 70L

£3.79

Also in packs from £9.89

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
Representative illustration of a Brilliant Turquoise Discus beside driftwood
Advanced

Brilliant Turquoise (Symphysodon aequifasciatus) — Domestic Strain

26–30°C · pH 6–7.5

£39.09
Gold Gourami (Trichopodus trichopterus)
Moderate

Gold Gourami (Trichopodus trichopterus)

24–28°C · pH 6–8 · 81L

From £2.99Some sizes on sale
Firemouth Cichlid (Thorichthys meeki) with a red throat over light gravel
Moderate

Firemouth Cichlid (Thorichthys meeki)

20–32°C · pH 6.5–8.5 · 108L

£5.39
Choosing tropical fish and planning their care

Featured live stock

Live prices · Live Arrival Guarantee

Snow White Bristlenose Pleco resting on rounded gravel beneath green leaves, with dark wood behind

Snow White Bristlenose Pleco (Ancistrus sp.)

22–27°C · pH 6–8

£35.99
Albino Bronze Cory resting on pale sand in front of dark wood and green plants, with a cream body and red eye

Albino Bronze Cory (Osteogaster aenea)

22–27°C · pH 6–8 · 72L

£2.99
El Tigre Endler male (Poecilia wingei) with a gold body, dark tiger bars and a black-edged yellow-green tail
Easy

El Tigre Endler Male (Poecilia wingei)

24–30°C · pH 7–8.5 · 41L

£6.99
Neon Tetra with a bright blue stripe and red rear body against a softly blurred background
Moderate

Neon Tetra (Paracheirodon innesi)

21–25°C · pH 5–7

£1.89
Gold Harlequin Rasbora (Trigonostigma heteromorpha)
Moderate

Gold Harlequin Rasbora (Trigonostigma heteromorpha)

22–25°C · pH 5–7

£5.99
Yellow Mix Male Guppy with a blue-gold body and broad red-and-yellow tail beside wood and green plants
Easy

Yellow Mix Male Guppy (Poecilia reticulata)

22–28°C · pH 7–8 · 41L

£4.99
Orange Assorted Platy swimming among green plants and dark wood
Easy

Assorted Platy (Xiphophorus maculatus) – 1–6cm & XL Size Grades

20–25°C · pH 7–8 · 54L

£2.99
Cardinal Tetra in side profile with a blue stripe and full-length red lower body on black
Moderate

Cardinal Tetra (Paracheirodon axelrodi)

23–27°C · pH 5.5–7 · 60L

£2.54
Large planted freshwater aquarium with several small fish at Malta National Aquarium
The Commons source identifies this as a freshwater aquarium at Malta National Aquarium. The photograph shows planted habitat and several small fish but does not identify every species, prove compatibility, health or current Tropical Fish Co stock. The complete source frame was resized proportionally without cropping or colour editing.Photograph: Netha Hussain · CC0 1.0

The quick version

  • Live catalogue: prices and availability are resolved at the visit rather than promised in static copy.
  • Choose by adult needs: compare mature size, aquarium footprint, water, temperament and social requirements before colour.
  • Retail boundary: we sell fish, but an available product is not automatically suitable for your aquarium.
  • Delivery check: read the current postcode, dispatch, arrival-guarantee and acclimation terms before ordering.

Browse by category

Each tile is a curated category — filter by species, tank size and more inside.

Bettas

Bettas

Halfmoon, plakat, wild-type — UK-stocked

Tetras

Tetras

Cardinal, Neon, Ember & schooling tetras

African Cichlids

African Cichlids

Mbuna, Peacock, Aulonocara, Frontosa

Catfish & Plecos

Catfish & Plecos

Bristlenose, Corydoras, L-number specials

Livebearers

Livebearers

Guppies, Endlers, Mollies, Platys, Swordtails

Rasboras & Danios

Rasboras & Danios

Harlequin, Chili, Galaxy, Zebra and more

Discus

Discus

Stendker, Pigeon Blood, Royal Blue strains

Loaches & Oddballs

Loaches & Oddballs

Kuhli, Hillstream, Yoyo, oddball specials

Shop every species, family and setup

The full Tropical Fish Co range — every live hub in one index.

Choose fish for the aquarium you actually have

The product grid above is a live shopping tool, not a compatibility promise. Begin with the aquarium's mature water volume and footprint, stable temperature, tested pH and hardness, filtration and existing livestock. Then compare those conditions with the exact fish at its adult size—not only the colour or size shown in a sale photograph.

UK welfare guidance recommends planning around adult fish size, installing suitable filtration, completing a fishless cycle and testing the water before livestock is added [2]. OATA's pet-purchase code also asks buyers to consider adult size, lifespan, equipment, time and continuing cost before making the commitment [3]. Neither source turns one tank size or one list of tank mates into a universal rule.

Start withCompare on the exact listing or guideStop and check if
Adult spaceMature length, body shape, swimming style, aquarium base and usable volumeOnly the juvenile sale size is clear
WaterTemperature, pH, hardness and stabilityYour water has not been tested
Social needsRequired group, territory and sex ratio where relevant“Community fish” is the only compatibility detail
Existing animalsAdult size, speed, feeding access and predation riskA suggested pairing is treated as guaranteed safe
Long-term careDiet, expected commitment, equipment and backup spaceThe purchase depends on the fish doing a maintenance job

What a useful online fish listing should tell you

OATA's UK distance-selling guide says live-animal information should cover the current and potential adult size, common and scientific name, compatibility, water parameters, minimum aquarium guidance, diet, origin, guarantee and price [1]. For this catalogue, the practical check is:

  1. Identity: the exact common and scientific name, including a colour form only when it is genuinely identified.
  2. What you receive: current sale size, sale unit and whether a sex or form is actually specified.
  3. Adult commitment: mature size, aquarium footprint or volume guidance and social requirements.
  4. Environmental fit: temperature, pH, hardness, filtration and flow where material.
  5. Behaviour and feeding: compatibility risks, diet and any specialist requirements rather than a broad “peaceful” or “easy” label.
  6. Commerce facts: current price, availability, dispatch eligibility and guarantee terms.

The live cards own price and availability because both can change. Care guides own deeper husbandry reasoning. If an important detail is absent or the sources disagree, pause and ask rather than filling the gap with an assumption.

Browse by fish family

Use family collections to create a shortlist, then return to each exact fish:

This page is deliberately fish-only. Browse Shrimps and Crustaceans, Freshwater Snails or Goldfish and Cold-water Fish in their own clearly labelled collections.

A compatibility check before checkout

“Best together” is not a species list. For every proposed combination, ask five questions:

  • Will all animals fit the adult aquarium footprint and usable swimming zones?
  • Do their stable temperature, pH and hardness ranges genuinely overlap?
  • Does each fish receive the group or territory it needs?
  • Can every animal feed without being outcompeted or predated?
  • Is there an immediately usable separation plan if behaviour changes?

Our tank-mate tool can help organise that comparison, but it cannot observe the individual fish or guarantee the outcome. Stocking examples and “community” labels are starting points, never safety promises.

Delivery checks before you order

Read the current delivery information before payment. Check your postcode, the available dispatch day, delivery charge, who will receive the parcel and the exact Live Arrival Guarantee conditions. Prepare the correct, fully cycled aquarium before dispatch rather than trying to build or stabilise it after the fish has travelled.

On arrival, follow the instructions supplied for that shipment. Packing method, journey and source water can differ, so a universal timer copied from another order is not automatically correct. The acclimation timer is a prompt for the chosen process, not a substitute for the current shipment instructions. The returns and live-arrival policy explains the evidence and contact timing required if there is a problem.

When waiting is the better buying decision

Do not order yet if the aquarium is uncycled or unstable, the water has not been tested, adult size or identity is unclear, the required group will not fit, you cannot receive the delivery promptly, or the plan has no safe fallback for territorial or predatory behaviour. A product being available does not remove those constraints.

Tropical Fish Co is the retailer of products linked from this page. That commercial relationship is why current stock and purchase controls appear early. It does not change the welfare evidence, make every animal suitable or turn availability into a recommendation.

Examples from the tropical-fish catalogue

Source-labelled group of albino Corydoras aeneus feeding in an aquarium
The Commons source labels these fish as albino Corydoras aeneus feeding in an aquarium. The photograph does not establish sale size, sex, health, group-size guidance or current Tropical Fish Co availability. The complete source frame was resized proportionally without cropping or colour editing.Photograph: Gabriel Resende Veiga · CC BY-SA 4.0
Source-labelled cobra guppy Poecilia reticulata in an aquarium
The Commons source labels this aquarium fish as a cobra guppy, Poecilia reticulata. The photograph does not establish the appearance of every guppy, its sex, sale size, health or current Tropical Fish Co availability. The complete source frame was resized proportionally without cropping or colour editing.Photograph: Andrew Sheedy · CC BY-SA 4.0

Frequently asked questions

The live fish-only grid covers available tetras, rasboras, danios, barbs, livebearers, corydoras, plecos, loaches, gouramis, angelfish, cichlids and other tropical aquarium fish. Availability changes. Shrimp, snails, crabs, amphibians and cold-water fish use separately labelled collections.
There is no single best species for every aquarium. The strongest choice fits your mature tank volume and footprint, tested water, temperature, existing animals, experience and ability to keep the required group. Start with those constraints, then compare the exact listing and care guide.
Look for a seller that identifies the exact fish, gives current price and sale-unit information, explains adult needs and water requirements, uses a suitable live-animal delivery service and publishes clear arrival-guarantee terms. This page links our live catalogue and current policies so you can check those details before payment.
Easy is conditional. A species that matches stable local water, aquarium size and group needs can be more manageable than one requiring major water adjustment or specialist feeding. Beginner labels never replace checking the exact adult requirements.
No fixed list guarantees compatibility. Compare adult size, water and temperature overlap, swimming space, feeding access, social structure and territorial behaviour, and keep a workable separation plan. Individual behaviour and an aquarium's layout can change the result.
Price varies by species, form, sale size, sale unit and current availability. The live product cards show the current price; do not rely on an old static price range or a search snippet.
Yes. Prepare and fishlessly cycle the aquarium, verify that filtration is working, and test the water before ordering. Cycling does not make every species suitable: the finished aquarium must still match the exact fish.
Shortlist fish only after checking adult size, temperament, water, temperature, group needs and feeding. Use the exact listing, cited care information and tank-mate tool as decision support rather than a safety guarantee.
Eligible orders use the live-animal service described on our delivery page. Postcode coverage, dispatch timing, charges and the Live Arrival Guarantee have conditions, so read the current policy and be available to receive the parcel.
Online purchase can be planned responsibly when the fish is accurately identified, the aquarium is already suitable and stable, delivery is appropriate, someone receives the parcel promptly and the seller provides clear arrival and support terms. Shipping cannot turn an unsuitable fish into a suitable choice.
The grid follows current catalogue eligibility and availability, so products can appear or disappear. A missing card is not proof that a species has been discontinued. Use search or the relevant family collection and verify the live listing before ordering.
Confirm the common and scientific identity, current sale size and unit, adult size, minimum aquarium guidance, water and temperature, diet, social needs, compatibility risks, price, availability and delivery terms. Ask before buying when a material detail is absent or unclear.

Keep exploring

Shop related

Sources & further reading

Material factual claims cite the sources below; store policy and cautious inference are labelled in the article. Sources are grouped by type so you can judge their weight at a glance.

Animal-welfare charity (1)

  1. [2]
    Royal Society for the Prevention of Cruelty to Animals. Choosing an aquarium for pet fish. RSPCA. View source

    UK welfare guidance on adult-size planning, filtration, fishless cycling and water testing; not a universal tank size or species-compatibility source.

Trade-body guidance (2)

  1. [1]
    Ornamental Aquatic Trade Association (2023). Guide to the responsible distance selling of live animals. Ornamental Aquatic Trade Association. View source

    UK trade-body guidance on the information a distance listing should provide, buyer suitability checks, care information, delivery and guarantees; not species-specific husbandry evidence.

  2. [3]
    Ornamental Aquatic Trade Association. Pet Code of Practice. Ornamental Aquatic Trade Association. View source

    Pre-purchase planning guidance covering adult size, lifespan, equipment, time and continuing costs; not a promise that any listed fish is suitable.

Tropical Fish Co Editorial Team
Prepared by

Tropical Fish Co Editorial Team

Evidence-led aquarium editorial team

The Tropical Fish Co editorial team compiles care guidance from the sources cited on each page, separates published evidence from practical husbandry policy, and checks retail links against the current catalogue. First-hand experience is included only when a named contributor and the observation have been verified.

Fish taxonomy and source checkingUK aquarium welfare guidanceCare-guide maintenanceCatalogue and internal-link verification