Poecilia reticulata male tuxedo blond gold

Recognise the guppy and its colour form

The Blond Gold Tuxedo Guppy, Poecilia reticulata, is a selected male colour form in the family Poeciliidae. FishBase records its native range as Venezuela, Barbados, Trinidad, northern Brazil and the Guianas and a maximum of 5 cm standard length for male or unsexed fish. It suits a prepared beginner who can provide a mature filtered aquarium, mineral-bearing water, a planned guppy group and a response plan for chasing or fin damage. Tuxedo and blond gold are appearance labels; they do not make it a separate species or change the core care decisions for a guppy.

FishBase records Poecilia reticulata from varied wild habitats, including vegetated springs, streams, ponds, canals and ditches. Wild fish feed on zooplankton, small insects and detritus. That natural history helps explain why aquarium guppies benefit from plant cover, open water and varied omnivore food, but aquarium portions and maintenance should follow the routine below rather than trying to copy a wild site.

Eschmeyer’s Catalog of Fishes accepts Poecilia reticulata as the scientific name. The strain words identify the selected appearance and the word male identifies the sold sex; the scientific name remains the binomial Poecilia reticulata.

Decide whether it suits your aquarium

Our store care level is easy because a prepared beginner can meet the routine, but easy does not mean suitable for a bowl, an uncycled aquarium or unstable water. This guppy needs mature biological filtration, measured mineral-bearing water, swimming room, companions, correctly sized food and a plan for persistent chasing or fin damage.

Temperament is peaceful, yet individual behaviour still matters. Long fins can attract nipping, males can display or chase, and a nominally peaceful community can fail when space, feeding access or water chemistry is wrong. Choose the aquarium and group first, then assess every proposed tank mate against the same conditions.

Check the sold unit and planning numbers

One purchase supplies one animal. The dispatch size is 3–4 cm. Dispatch size describes the fish sent; it is not an adult-size promise.

Sex is guaranteed only when the exact product or selected option explicitly states male or female. This Poecilia reticulata male tuxedo blond gold listing is sold as male.

The gallery images are representative of this type of animal rather than photographs of the exact animal supplied, so colours can look slightly different from the live animal. Selected strains can vary naturally in the precise balance of gold, dark body colour and translucent finnage.

Use the decisive figures

Standard length measures the body without the tail fin, so a broad domestic tail can extend beyond the recorded 5 cm male body length. Seriously Fish lists 6 cm standard length, a 45 × 30 cm base and about 41 litres at species level, while FishBase records 5 cm for male or unsexed fish and gives a 60 cm minimum aquarium length and a group of five or more. Our more conservative screen uses at least 60 cm of aquarium length and five or more guppies where filtration, water tests, sex planning and other livestock permit.

For routine water, our complete guppy care guide uses 22–28°C. The overlap of FishBase, Seriously Fish and OATA’s combined guppy-and-molly group guidance is pH 7.0–8.0 and 9–18 dGH. Browse the guppy collection when planning a complete social group, but treat each product card as one animal unless its offer explicitly says otherwise.

Match the plan to the aquarium

Prepare the aquarium before choosing the group

Start with a mature, filtered aquarium at least 60 cm long. The length protects usable horizontal swimming room, while the total water volume affects stability and the amount of waste the system can process. A tank labelled around 60 litres can be a candidate for a small group only when it also reaches about 60 cm in length and is not already committed to other livestock.

Do not convert litres into a fixed fish allowance. Two aquariums bearing the same volume can have different lengths, footprints, filters, water chemistry and existing populations. Five guppies can be a conservative starting group in a suitable 60 cm aquarium, but five is not an automatic maximum and the same aquarium may be unsuitable when it contains tank mates, has weak filtration or lacks a population plan.

Complete these checks first

1. Set up the aquarium, heater where needed, filter, substrate, plants and secure cover.
2. Mature the biological filter before adding fish; elapsed time alone does not demonstrate that it can process waste.
3. Test for zero detectable ammonia and zero detectable nitrite.
4. Confirm that temperature, pH and hardness remain within the routine range.
5. Measure the aquarium length and preserve open swimming space after decoration.
6. Plan the full guppy group, its sex composition and a separation option before the first addition.

If this is your first aquarium, follow our guide to preparing and maturing a first tropical tank before choosing livestock. Fish should not be used to start the cycling process because ammonia and nitrite are toxic.

Assess a proposed 60-litre setup

Hold stable mineral-bearing water

Run this aquarium at 22–28°C, pH 7.0–8.0 and 9–18 dGH for routine care. The temperature is our store display range, while pH and hardness are the overlap of FishBase, Seriously Fish and OATA’s broader guppy-and-molly guidance. These are practical aquarium targets rather than a single optimum point.

Choose a stable value within each range instead of repeatedly moving the water towards the middle. A tank holding 24°C, pH 7.4 and 12 dGH already meets the routine targets. A sudden adjustment towards 25°C or pH 7.5 creates change without solving a care problem. Stability, accurate measurement and gradual corrections matter more than chasing a perfect-looking number.

Test the water itself

• Temperature: verify 22–28°C with an independent aquarium thermometer rather than relying only on the heater dial or room temperature.
• pH: keep it from neutral to alkaline at 7.0–8.0 and avoid abrupt correction.
• General hardness: maintain 9–18 dGH so the water remains appropriately mineral-bearing.
• Ammonia and nitrite: both should remain at zero detectable mg per litre.
• Nitrate: keep it from exceeding 20 mg per litre above the normal tap-water level.

Our aquarium water-chemistry guide explains what each test measures. Use the water matcher to compare measured aquarium water with the stated range, but make the stocking decision from actual test results rather than postcode or assumptions about UK tap water.

Treat replacement tap water with a suitable conditioner before it enters the aquarium. Match temperature and chemistry gradually during maintenance. Guppies occur in fresh and brackish environments, but that does not make routine aquarium salt necessary. Add salt or extra minerals only for a measured purpose and only after checking the needs of every fish, plant and invertebrate sharing the system.

If a result falls outside the range, test again to rule out a handling error, inspect recent water changes and source-water values, then make gradual corrections. Never respond to one result by causing a second abrupt change.

Build filtration around daily waste

A mature biological filter is essential. The RSPCA explains that aquarium filters support bacteria that convert toxic ammonia into nitrite and then the safer end product nitrate. The filter must therefore run continuously and have enough biological capacity for the complete group, its food and every other animal in the aquarium.

Seriously Fish gives a useful worked example for an aquarium of about 41 litres: a turnover of four to five times the volume each hour corresponds to a filter rating of roughly 165–205 litres per hour. Treat that as a planning example for that tank size, not a promise of performance. Media, head height, blockages and the way water moves around plants and ornaments can reduce effective flow.

Balance capacity with gentle movement

Guppies appreciate quieter planted water, and strong current should be avoided. A filter can have adequate biological capacity without driving the fish around the tank. Watch the animals rather than the surface alone: they should be able to hold position, feed and cross the aquarium without being pinned behind ornaments or continually pushed into one corner.

Protect the intake where small fish or future fry could be drawn against it. Any guard must still permit reliable flow and needs regular inspection because fine surfaces clog more quickly.

Do not turn the filter off overnight. Oxygen use and waste processing continue after the lights go out. If equipment stops unexpectedly, test ammonia and nitrite, restore safe circulation promptly and monitor breathing and swimming. A clear aquarium is not automatically biologically safe; only testing shows whether toxic waste is being controlled.

Use a weekly maintenance rhythm

At least once each week, change 25% of the water. Siphon visible waste from the substrate, condition the replacement tap water and bring it close to the aquarium’s temperature before adding it gradually. Test ammonia, nitrite, nitrate, pH and temperature at least weekly, and test sooner whenever behaviour, appetite or equipment performance changes.

Keep beneficial bacteria in the filter

Inspect the filter for reduced output and blockages during routine maintenance. If the filter needs cleaning, do not run it under the tap. Rinse it lightly in water removed from the aquarium during the partial water change so fewer beneficial bacteria are lost.

Do not replace all mature media at once as part of an ordinary clean. Preserve functioning biological media while removing enough trapped debris to restore flow. After any significant filter work, repeat ammonia and nitrite tests because the aquarium’s ability to process waste may have changed.

Read the weekly results as a sequence

A new fish increases the waste load and feeding demand. Additions should therefore be gradual, even when the final social plan calls for five or more guppies. Watch test results as the filter’s bacterial population adjusts, and do not add another group simply because the water still looks clear.

Record results with dates. A short log makes it easier to distinguish a one-off test error from a developing trend and connects changes with maintenance, new livestock or altered feeding. Consistent results also give a better basis for compatibility decisions than a single test taken on the day of purchase.

Arrange cover with open swimming room

Combine live plants or suitable artificial cover with open horizontal swimming space. Floating vegetation is appreciated, while plants and sight breaks allow one fish to move away from another without turning the whole aquarium into a maze. Preserve clear routes between feeding areas, cover and the front of the tank.

Use a secure cover because the aquarium should remain safely enclosed. Check gaps around cables, pipes and filter fittings. The cover should not prevent normal gas exchange or access for routine equipment inspection.

Choose furnishings for long fins

• Use smooth ornaments and avoid sharp or rough edges that could catch broad fins.
• Keep artificial plants flexible and inspect mould lines or pointed tips before use.
• Anchor decor so it cannot shift during maintenance.
• Leave enough open water for the whole group to feed without crowding.
• Create more than one route around major pieces of wood, rock or planting.

Long-finned fish should not have to fight a strong current to remain in place. Position the filter outlet so it maintains circulation without exhausting the fish. After changing the layout, observe whether every guppy can still swim, rest and feed normally.

Let behaviour judge the layout

Dense cover can allow more fry to survive if females are later added. Treat that as a population consequence rather than an incidental bonus. Plants improve structure and shelter, but they do not replace enough aquarium space, working filtration or a plan for additional fish.

Plan the complete social group

Guppies are social fish. Use five or more as the conservative group plan where the aquarium, filtration, sex composition and other livestock allow. A solitary male does not complete the social plan, while simply adding four fish without checking sex, space and water quality can create a different welfare problem.

This offer is male, so decide whether it will join a male-only group or a deliberately managed mixed-sex group. Male-only groups prevent new mixed-sex mating within that group, but males may still display, chase or damage fins. Space, sight breaks, equal feeding access and a cycled separation option remain necessary.

Compare the group plans

For mixed groups, OATA suggests two females for each male to reduce pressure on females or other inhabitants. That ratio is a starting arrangement, not a guarantee that chasing will remain acceptable. Observe individuals and intervene when one fish is repeatedly pursued, cornered, excluded from food or physically damaged.

Guppies are livebearers. Females may produce live young, and a female that encountered a male earlier may retain viable sperm for months. Before adding females, decide where fry would live, how additional waste would be managed and how young fish would be responsibly rehomed. Adult predation is not a population-management plan.

Use behaviour as the checkpoint

• Every fish should reach food and use both open water and cover.
• Short display should not become continuous pursuit or cornering.
• Fins should remain open and undamaged.
• No individual should lose body condition while others feed normally.
• A safe, mature separation space should be ready before it is urgently needed.

Increase the group only after confirming that biological filtration and usable swimming room can support the change. The target of five or more describes social planning; it does not override the aquarium’s capacity.

Feed small complete portions once daily

Use an appropriately sized, nutritionally complete omnivore flake or granule as the staple, preferably with a high algae content. OATA’s group guidance advises feeding once a day and offering only what the fish can eat within a few minutes. Watch the whole group so one assertive fish does not take most of the portion.

Small live or frozen foods such as daphnia, small bloodworm or tubifex can add compatible variety. These foods supplement rather than replace the complete staple. Use aquarium foods from a biosecure source and match particle size to the fish’s mouth.

Set the portion by observation

1. Offer a small first portion across enough surface area for the group.
2. Check that every fish approaches and swallows food.
3. Add only a little more if the first portion is consumed promptly.
4. Stop before food sinks into inaccessible areas or remains after a few minutes.
5. Remove leftovers and reduce the next portion if food remains.

Overfeeding allows uneaten food and extra fish waste to break down, increasing the load on the filter and threatening water quality. A larger meal does not compensate for an animal missing food because it is being chased. Address the social or layout problem instead.

Wild guppies eat zooplankton, small insects and detritus, while the species profile also describes wild fish as primarily insectivorous. Aquarium strains accept many foods, but variety should remain nutritionally controlled. Do not collect insects, detritus or water from outdoor habitats for the aquarium.

Manage arrival with a prepared tank

Prepare and test the mature aquarium before the delivery window. Keep the tank within 22–28°C with zero detectable ammonia and nitrite, and complete major maintenance before the fish arrives rather than immediately after introduction.

Follow our current delivery, acclimatisation and Live Arrival Guarantee policy.

Work through the arrival steps

1. Have someone present to receive the parcel so live fish are not left unattended.
2. Start filming while the parcel is still sealed and the outer box is visible.
3. Open the parcel the same day in one continuous take, showing the fish still inside the sealed bag before anything is disturbed.
4. Float the bag for 20–30 minutes before releasing the fish.
5. Never pour the bag water into the aquarium.

After release, observe swimming, balance, breathing and fin position. Keep a separation option ready if existing fish respond with persistent pursuit or nipping.

Do not use arrival day to add several unrelated livestock groups. A single planned addition gives the filter and keeper a clearer response point if ammonia, nitrite or aggression appears. Record the introduction date and recheck water after the new feeding and waste load begins.

Review the first week

• Confirm that the guppy feeds consistently and is not excluded.
• Look for steady swimming and regular breathing.
• Inspect broad fins for splits, clamping or new damage.
• Repeat ammonia and nitrite tests rather than relying on water clarity.
• Watch interactions at feeding time and around preferred cover.

A dispatch measurement of 3–4 cm does not reduce the need for the adult aquarium plan. The fish should enter a system already chosen for its expected adult body length, social group and long-term water conditions.

Respond to health changes with tests first

A settled guppy should swim steadily, breathe regularly, hold open undamaged fins, maintain a normal body profile and feed consistently. Learn the individual’s ordinary behaviour so a meaningful change is noticed early.

The RSPCA’s fish health guidance treats altered swimming, breathing, appetite and appearance as warning signs. Surface gasping, sitting on the bottom, erratic movement, clamped or damaged fins, spots, fluffy growths, wounds, unusual colour change, hiding or sudden appetite loss require prompt attention rather than a guessed diagnosis.

Use a water-led response

1. Test ammonia, nitrite, nitrate, pH and temperature immediately.
2. Inspect the filter, heater, flow and recent maintenance.
3. Review new animals, food changes and social behaviour.
4. Record the signs, their timing and any test results.
5. Isolate safely where appropriate without moving the fish into an uncycled container.

If ammonia or nitrite is detectable, protect water quality and restore biological filtration rather than treating the symptom alone. If the water values are suitable but the fish remains distressed, contact us or seek diagnosis from a fish vet. Do not choose salt, heat or medication from one visible sign because different problems can look similar.

The MSD Veterinary Manual recommends at least 30 days of quarantine, with longer isolation where indicated. Use a separate biosecure aquarium with dedicated equipment, mature filtration, appropriate temperature and repeated testing. Quarantine protects the established group only when the isolation system also protects the new fish’s welfare.

For diagnosis and lawful treatment in the UK, use OATA’s fish-vet directory. Keep dated photographs and water-test results because a clear timeline helps distinguish an acute equipment failure from a gradually developing health or social problem.

Screen every tank mate before introduction

This male guppy is peaceful, but no species name guarantees a successful community. Screen the exact proposed animal for water overlap, adult size, feeding style, social needs, territorial behaviour and fin-nipping risk. The aquarium must have enough usable room for every complete social group after decor and existing livestock are counted.

Avoid established fin-nipping risks

Avoid fin-nipping species such as tiger barbs and serpae tetras. The broad decorative fins of male guppies can attract repeated nipping, and extra plants do not turn a poor behavioural match into a dependable one. Separate the animals if pursuit or fin damage appears.

Apply the six-part screen

1. Water: choose overlap within 22–28°C, pH 7.0–8.0 and 9–18 dGH rather than keeping either animal at the edge of its range.
2. Adult size: exclude animals able to swallow or seriously injure a guppy.
3. Behaviour: assess nipping, territorial display, courtship and pursuit.
4. Space: include the adult footprint and group size of both species.
5. Food: ensure every animal can reach an appropriate diet without exclusion.
6. Fallback: keep a mature separation option ready before introduction.

Quiet community fish such as suitable livebearers, rasboras, corydoras, small loricariids and tetras may pass these checks in an appropriately sized aquarium, but the exact species still matters. The word tetra or livebearer alone is not a compatibility decision.

Watch introductions at feeding time and around preferred cover. Persistent pursuit, cornering, missed meals, clamped fins or fresh damage means the combination needs intervention, even when both species are generally described as peaceful.

Keep related livebearer identities clear

Do not treat every small livebearer as the same fish. The guppy is Poecilia reticulata, while Endler’s livebearer is Poecilia wingei. The formal description of Poecilia wingei supports its identity as a distinct species, and Eschmeyer’s Catalog of Fishes lists that name as valid.

If preserving a documented line matters, house guppy and Endler lines separately and do not represent descendants of mixed ancestry as pure examples of either species. Similar size or appearance does not remove the need to identify each fish correctly and plan around its own care.

Be cautious with other long-finned fish

A betta and guppy combination is not a sensible default. Long fins, display and territorial responses vary between individuals, so a larger planted aquarium cannot promise safety. Use the behavioural screen and choose a less ambiguous match when the outcome depends on one individual tolerating another.

Small shrimp or their young may be eaten. “Adult invertebrates” is too broad to serve as a guarantee because species, size and behaviour differ. Check the exact invertebrate’s water needs and adult size, then decide whether predation risk fits the intended aquarium.

Review compatibility after introduction

Compatibility can change as animals grow, plants fill the aquarium or group numbers shift. Reapply the screen whenever a fish matures, a new group is added or one animal begins monopolising food or space. Separation is the correct response when observed behaviour shows that the planned match is failing.

Never release unwanted guppies, fry, plants, snails or aquarium water outdoors or into a surface-water drain. Rehome livestock responsibly and dispose of aquarium water where organisms cannot reach natural waterways.

Answer common buying and care questions

How big does Poecilia reticulata male tuxedo blond gold get?

FishBase records up to 5 cm standard length for male or unsexed guppies. Standard length excludes the tail fin, and the 3–4 cm dispatch size is not the adult size.

What size aquarium does this guppy need?

Use a mature, filtered aquarium at least 60 cm long for one small guppy group. Seriously Fish gives a 45 × 30 cm base and about 41 litres, while Tropical Fish Co applies the more conservative 60 cm screen with suitable filtration, swimming room and safe test results.

How many Poecilia reticulata male tuxedo blond gold guppies should I keep together?

Plan five or more guppies where aquarium capacity and the sex plan allow. A male-only group still needs monitoring for persistent display, pursuit, missed feeding and fin damage.

Does Poecilia reticulata male tuxedo blond gold suit beginners?

It can suit a prepared beginner who provides a mature filtered aquarium, zero detectable ammonia and nitrite, stable mineral-bearing water, a planned social group and a response plan for chasing or illness.

What does this guppy eat?

Feed an appropriately sized complete omnivore flake or granule, preferably with a high algae content, once daily in a portion consumed within a few minutes. Small live or frozen daphnia, bloodworm or tubifex can provide compatible variety.

What temperature and pH does Poecilia reticulata male tuxedo blond gold need?

Maintain 22–28°C, pH 7.0–8.0 and 9–18 dGH; these routine figures use Tropical Fish Co guidance and the FishBase, Seriously Fish and OATA group-guidance overlap. Keep ammonia and nitrite at zero detectable mg per litre.

Is this male guppy aggressive or likely to nip fins?

It is generally peaceful, but males may display or chase. Avoid fin-nipping species such as tiger barbs and serpae tetras, and separate fish if persistent pursuit, missed feeding or fin damage appears.

Which animals can this guppy live with?

Suitable livebearers, rasboras, corydoras, small loricariids and tetras may work in a quiet community after checking water overlap, adult size, social space, feeding access and behaviour. Avoid fin-nipping species, and exclude animals able to swallow or seriously injure a guppy.

How does Poecilia reticulata male tuxedo blond gold arrive alive in the UK?

Start filming every delivery while the parcel is still sealed, then open it in one continuous take with the fish still visible inside the sealed bag before anything is disturbed. Have someone present to receive the parcel, float the bag for 20–30 minutes before release and never pour the bag water into the aquarium.

Consult the care and identity references

• FishBase: Poecilia reticulata — identity, family, distribution, wild biology, environmental range, recorded length and aquarium notes.
• Seriously Fish: Poecilia reticulata — aquarium dimensions, water range, diet, behaviour, compatibility and sex characteristics.
• OATA: guppies and mollies — UK group guidance on water, social care, feeding, maintenance and introductions.
• RSPCA: aquarium environment — filtration and biological waste processing.
• Eschmeyer’s Catalog of Fishes: Poecilia reticulata — accepted scientific identity.
• RSPCA: fish health and welfare — normal behaviour, warning signs and welfare response.
• MSD Veterinary Manual: management of aquarium fish — quarantine and water-led health assessment.
• OATA: find a fish vet — UK fish-vet directory.
• Description of Poecilia wingei — formal species description distinguishing Endler’s livebearer.
• Eschmeyer’s Catalog of Fishes: Poecilia wingei — current valid-name record.