Poecilia reticulata male tuxedo red

Choose this guppy for a prepared social aquarium

The Red Tuxedo Male Guppy (Poecilia reticulata) is a small Poeciliidae livebearer native to Venezuela, Barbados, Trinidad, northern Brazil and the Guianas. FishBase records a maximum of 5 cm standard length for male or unsexed fish. This male offer suits a prepared beginner who can provide a mature, filtered aquarium, stable mineral-bearing water and a planned social group.

Red tuxedo describes the selected aquarium appearance rather than a separate species. The photograph shows a red-orange and black guppy with a dark rear body and vivid dorsal and tail fins, but use the species’ adult size and care needs when planning the aquarium. Eschmeyer’s Catalog of Fishes recognises Poecilia reticulata as the accepted name.

Keep a group of five or more where aquarium capacity, sex planning, filtration, water tests and other livestock allow. Maintain 22–28°C, pH 7.0–8.0 and 9–18 dGH. These routine values are the overlap of FishBase, Seriously Fish, OATA and the Tropical Fish Co Guppy Care Guide. OATA’s combined guppy-and-molly figures are group guidance, not a species-specific optimum.

A peaceful temperament does not make this fish suitable for every community. Long fins are vulnerable to nipping, and a social group adds more waste and feeding competition than one fish. Plan the complete adult group before purchase rather than treating this guppy as a solitary decoration.

Understand the male offer and plan for adult growth

One purchase supplies one male fish, graded 3–4 cm for dispatch. That dispatch grade describes the fish at the point of supply, not the space it will need as an adult. Plan around the 5 cm maximum standard length recorded by FishBase for male or unsexed guppies.

Seriously Fish lists 6 cm standard length for the species. For this sex-specific offer, use the 5 cm male or unsexed figure throughout the care plan while still allowing unrestricted swimming room and space for the whole social group.

Sex is guaranteed only when the exact product or selected option explicitly states male or female. This Poecilia reticulata male tuxedo red 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.

Male-only planning avoids new mixed-sex mating within that group, but males may still display or pursue one another. Watch whether each fish can feed, swim normally and move away from repeated attention. Keep a mature separation aquarium ready if persistent chasing, hiding or fin damage develops. The guppy collection can be used to compare exact sex descriptions before building a group.

Check whether the care plan fits before purchase

This guppy is classed as easy by Tropical Fish Co because it can suit a prepared beginner, but it still depends on a mature biological filter, weekly testing and deliberate group planning. Easy does not mean suitable for an uncycled bowl or a new aquarium being cycled with fish.

Confirm that ammonia and nitrite are zero before adding fish. Check the aquarium’s internal length, usable footprint, existing livestock and filter capacity rather than using a fish-per-litre formula. A larger volume can improve stability, but it does not remove the need to monitor waste, feeding access and social behaviour.

Choose this fish when you want an active, peaceful livebearer and can manage the whole group. Reconsider the plan if the aquarium has known fin-nippers, cannot hold the routine water range or has no spare capacity for a social group.

Plan aquarium space around the whole group

Use a mature, filtered aquarium at least 60 cm long for one small guppy group. Seriously Fish describes a 45 × 30 cm base and about 41 litres, while OATA advises at least 45 litres for a small group of smaller livebearers. FishBase gives a 60 cm aquarium length, and Tropical Fish Co uses that more conservative length as its house screen.

Do not treat 41 or 45 litres as permission to fill an aquarium to a calculated maximum. Internal length, footprint and actual water volume change after substrate, decor and equipment are installed. Existing fish also use space and biological capacity. A nominal 60-litre aquarium can be a candidate only when it is approximately 60 cm long, mature, filtered, suitably furnished and not already carrying an incompatible community.

Measure the aquarium, not only its label

• Length: confirm at least 60 cm of aquarium length for the group plan.
• Footprint: preserve open horizontal swimming room after planting and decor.
• Filtration: judge capacity from repeated ammonia, nitrite and nitrate tests rather than the box label alone.
• Population: include every adult fish, the sex plan and any possible fry before adding more livestock.
• Behaviour: reduce stocking or separate fish if an individual cannot feed, rest or escape repeated pursuit.

Five guppies can be a conservative starting group in a suitable aquarium, not an automatic maximum. Tank mates, weak filtration, poor tests or repeated chasing can make the same aquarium unsuitable. Add fish slowly so the filter’s beneficial bacteria can respond to increased waste and feeding.

Work through the complete space decision

For example, a tank labelled 60 litres still needs its internal length checked. If it is about 60 cm long, fully matured and empty apart from the planned guppy group, it may pass the first space screen. If that same aquarium already contains another social species, the label does not create spare capacity: add the adult space, waste and feeding needs of both groups before deciding.

Review the layout again after the fish settle. A group that uses the full length, feeds without crowding and can move between open water and cover is using the aquarium differently from one that clusters in a corner or excludes an individual. Treat persistent crowding as a reason to change the plan, even when the test results remain acceptable.

Never plan a smaller temporary aquarium around the 3–4 cm dispatch grade. The adult group requires its full swimming length and biological capacity from the start.

Keep the water stable and mineral-bearing

Keep the aquarium at 22–28°C, pH 7.0–8.0 and 9–18 dGH. The temperature range sits within FishBase’s 18–28°C environmental record and Seriously Fish’s 17–28°C aquarium range. The pH and hardness figures are the common overlap of FishBase, Seriously Fish, OATA and Tropical Fish Co guidance.

Use an aquarium heater whenever the room cannot maintain that temperature range. Verify the water itself with an independent aquarium thermometer rather than relying on room temperature or the heater dial. Make changes gradually; sudden adjustments can move a reading through the target range while still destabilising the aquarium.

Test the values that affect daily welfare

• Ammonia: maintain zero mg/l.
• Nitrite: maintain zero mg/l.
• Nitrate: keep it no more than 20 mg/l above the normal tap-water level.
• Temperature: check the aquarium water, especially after heater adjustment or maintenance.
• pH and hardness: compare the aquarium with the actual source water before changing conditions.

UK tap water differs between regions and may change when water companies blend supplies. The aquarium water chemistry guide explains what each test measures, while the water matcher helps compare measured results with this care range.

Respond to a reading, not a guess

If ammonia or nitrite is detectable, stop treating the aquarium as ready for additional livestock and investigate filtration, feeding and recent stocking. If pH or hardness differs from the target, compare the source water and aquarium before making an adjustment. That comparison distinguishes a source-water mismatch from a change occurring inside the tank.

Keep a simple weekly record of temperature, pH, hardness, ammonia, nitrite and nitrate. A sequence of results shows whether conditions are stable and makes a gradual change easier to identify than an isolated test. Repeat tests after a water change, filter problem or stocking increase when the earlier result needs confirmation.

Although FishBase records the species in fresh and brackish environments, do not add salt simply because guppies can occur in brackish water. Any mineral adjustment needs a measured purpose and a compatibility check for every fish, invertebrate and plant in the aquarium. Long-term maintenance should remain in moderately hard or harder water rather than soft, acidic conditions.

Establish filtration before the fish arrive

Run a well-established biological filter before adding this guppy. The RSPCA explains that fish release toxic ammonia and that beneficial filter bacteria convert it to nitrite and then nitrate. A running pump alone does not show that enough bacteria are present; repeated zero ammonia and zero nitrite tests are the practical check.

If this is your first aquarium, follow the steps to prepare and mature a first tropical tank before livestock arrives. Do not cycle the aquarium with guppies. Add livestock gradually because every additional fish and every increase in feeding adds waste that the biological filter must process.

Maintain the filter without stripping its bacteria

1. At least once every week, carry out a partial water change of 25%.
2. Treat replacement tap water with conditioner to remove chlorine or chloramine before it enters the aquarium.
3. Use a siphon to remove accumulated solid waste from the substrate where needed.
4. Check the filter for blockages and reduced flow.
5. If the media needs cleaning, do not run it under the tap.
6. Rinse it lightly in tank water removed during the partial water change.

Test ammonia, nitrite and nitrate at least weekly and whenever feeding, stocking or behaviour changes. A clear aquarium can still contain harmful dissolved waste, so appearance is not a substitute for testing. Record results to identify gradual movement before fish show distress.

Strong current should be avoided. Position the outlet so it supports circulation without pinning the fish, folding its fins or preventing normal swimming. Filter intakes must also be safe for small fish and any fry that might later be present.

Balance open swimming room with planted retreat

Provide open horizontal swimming room, plants or other safe cover, and places where one fish can move out of another’s line of sight. Seriously Fish notes that planted aquariums with floating vegetation are appreciated and that strong currents should be avoided. OATA also recommends gravel or sand, plants and shelter.

Arrange the aquarium so cover does not consume the whole usable footprint. A dense wall of decoration may look sheltered while trapping a pursued fish or preventing it from reaching food. Leave connected swimming lanes through the aquarium and watch how the group uses them.

Use behaviour to judge the layout

Choose ornaments and artificial plants without sharp edges that could catch elongated fins. A secure cover is part of the Tropical Fish Co guppy plan, and equipment openings should not create an escape route.

Plants can provide shelter, but they do not replace adequate space, filtration or a population plan. Dense cover may also allow more fry to survive if females are later introduced, increasing the need for capacity and responsible rehoming.

Feed a complete small food without leaving waste

Use an appropriately sized, nutritionally complete omnivore flake or granule as the staple. FishBase records wild guppies eating zooplankton, small insects and detritus, while Seriously Fish describes wild fish as primarily insectivorous and notes that aquarium strains accept most foods offered. Add safe, compatible algal and invertebrate variety rather than relying on one treat.

OATA recommends feeding once a day and giving only what the fish can consume within a few minutes. Begin with a small measured portion, watch every fish and stop before food reaches the substrate or filter uneaten. Remove leftovers because decaying food increases the waste load and can drive ammonia or nitrite upward.

Make feeding a daily welfare check

• Mouth size: break or choose food small enough to take without repeated spitting.
• Access: distribute the portion so quieter fish are not excluded.
• Response: note reduced interest, difficulty swallowing or a sudden change in feeding position.
• Waste: reduce the next portion if food remains after a few minutes.
• Variety: use biosecure aquarium foods that fit an omnivorous diet.

Do not increase food simply to intensify colour or accelerate growth. The correct amount is the portion the actual group consumes without leftovers, while every fish maintains a normal body profile. More fish, growing juveniles or a new food texture may require a portion review, but the water tests decide whether the filter is coping.

Review the routine during the first week

At the first feed, offer a deliberately small portion and watch which fish reach it. If every fish feeds and nothing remains after a few minutes, use that observation as the starting point for the next day. If food drifts into decor or the filter, reduce the portion or change where it is distributed rather than adding another meal.

Check appetite alongside breathing, swimming and water tests. A fish that misses one feeding because it is repeatedly displaced needs the social and layout plan reviewed. A whole group that suddenly loses interest requires an immediate water-quality check before any change of food.

Store food correctly and replace stale or contaminated containers. If appetite falls, test the water and inspect behaviour, breathing and body condition before assuming the fish has become selective.

Manage the social group and any future fry

Keep five or more guppies where the aquarium, sex plan, filtration and water tests allow. OATA advises at least three, while FishBase records aquarium keeping in groups of five or more; Tropical Fish Co uses five or more as its conservative house policy. The number is a starting screen, not permission to overcrowd.

This fish is sold as male. A male-only group prevents new mixed-sex mating within that group, but it does not remove social monitoring. Males may display or pursue one another, so watch for persistent chasing, hiding, missed food, weight loss and fin damage. Rearrange sight breaks or use a mature separation aquarium when behaviour does not settle.

Plan before changing the sex mix

Guppies are livebearers. Seriously Fish advises several females per male because males may pursue females vigorously, and OATA suggests two females for each male. No ratio removes the need to observe individual behaviour or guarantees a manageable number of young.

Use scheduled social checkpoints

During the first days, confirm that every male can move through the aquarium, rest away from repeated attention and reach food. At the end of the first week, compare fin condition, body profile and feeding access with the arrival observations. Continued pursuit, new tears or one fish hiding through feeding time calls for intervention rather than another addition to the group.

Review the plan again before introducing any female or another species. The decision must include the extra adult space, the candidate’s social requirement and the possibility of fry. A separation aquarium is useful only when it is already mature, appropriately heated and tested; an uncycled container is not a response plan.

Before adding females, decide where young fish would be housed, how additional waste would be managed and how surplus fish would be responsibly rehomed. Do not use adult predation as population control. A nursery needs mature biological filtration, suitable temperature and repeated testing that maintains zero ammonia and nitrite.

Never release guppies, fry, plants, snails or aquarium water outdoors. Rehome livestock responsibly and dispose of aquarium water where organisms cannot enter ponds, drains connected to natural water or other watercourses.

Check health promptly and handle arrival in order

A settled guppy should swim steadily, breathe regularly, hold open undamaged fins, maintain a normal body profile and feed consistently. Hiding, clamped fins, surface gasping, unusual balance, spots, wounds or a sudden appetite change require prompt investigation rather than a diagnosis based on one sign.

Test ammonia, nitrite, nitrate, pH and temperature first. Inspect the filter, heater, recent maintenance, food, new livestock and social behaviour. The RSPCA’s fish health guidance supports water-quality checks and veterinary escalation. For qualified help, use OATA’s fish-vet directory.

Use a separate, biologically supported quarantine aquarium with dedicated equipment. The MSD Veterinary Manual recommends at least 30 days of isolation, with longer quarantine where indicated. Keep testing throughout quarantine and use lawful, labelled treatments under veterinary direction rather than choosing medication from one symptom.

Follow the arrival sequence

1. Receive the parcel in person so live fish are not left unattended.
2. Start filming while the parcel is still sealed and the outer box is visible.
3. Open it in one continuous take and show the fish inside the sealed bag before anything is disturbed.
4. Open and inspect the parcel on the day it arrives.
5. Float the bag for 20–30 minutes before releasing the fish.

The fish is hand-bagged in pure oxygen and carried in an insulated poly box, with a heat pack when the weather calls for it. Report any arrival concern on the same day with the order number and continuous video. Read the current delivery and Live Arrival Guarantee policy before the delivery date.

Screen every community candidate before mixing

This is a peaceful fish suited to a quiet community, but compatibility depends on the exact species, adult needs and aquarium. Seriously Fish names other livebearers, rasboras, corydoras, small loricariids and tetras as community candidates. Treat those as groups to investigate, not automatic approvals.

Apply the same screen to every candidate

1. Compare routine temperature, pH and hardness ranges and choose a stable overlap rather than the edge of either range.
2. Check adult size and whether either animal can swallow, injure or intimidate the other.
3. Check fin-nipping, territorial, courtship and feeding-competition risks.
4. Add the space needed by both social groups, including usable footprint and swimming length.
5. Confirm that every animal can reach food and shelter without being displaced.
6. Prepare a mature separation option before mixing the animals.

Some livebearers, rasboras, corydoras, small loricariids and non-fin-nipping tetras may pass this screen in an appropriately sized aquarium. Similar temperature alone is not enough: a candidate may require different hardness, more swimming space or a larger group than the aquarium can support.

Reject a match that fails one essential check

A candidate that shares 22–28°C but needs water outside pH 7.0–8.0 or 9–18 dGH does not pass the complete water screen. A peaceful fish that requires a social group too large for the remaining footprint also fails, even if neither species is predatory. Compatibility requires all the essential needs to fit together in the same aquarium.

After an introduction, compare actual outcomes with the plan. Normal feeding, intact fins and access to cover support continued observation. Repeated displacement, pursuit, injury or missed food means the combination needs separation and reassessment rather than more decor or more livestock.

Treat shrimp as a predation-risk pairing because small shrimp or young may be eaten. “Adult invertebrates” covers too many different animals to support one compatibility promise. Check the exact invertebrate’s water, feeding, adult size and vulnerability before considering the mix.

A betta and guppy combination is not a sensible default because territorial, display and long-fin interactions vary between individuals. A larger planted aquarium may provide more options, but it cannot guarantee safety. Judge behaviour after introduction and separate promptly if either fish is pursued, injured or prevented from feeding.

Avoid fin-nippers and intervene before damage worsens

Avoid fin-nipping species, including tiger barbs and serpae tetras. Seriously Fish specifically warns against keeping guppies with these fish, and OATA advises against species that may nip guppy fins. Do not move a known fin-nipper into the caution category simply because the aquarium is large or planted.

Peaceful labels do not remove the need to observe the guppies themselves. Display and short pursuit can occur within a male group, but repeated cornering, missed feeding, hiding, weight loss or damaged fins requires action. First confirm water quality, then separate the affected fish safely and reassess space, sight breaks and group composition.

Use visible outcomes to review the match

Introduce livestock slowly so the filter can respond to the additional waste. Continue testing after the introduction, because a socially calm combination can still exceed the aquarium’s biological capacity. The final decision must satisfy water chemistry, adult space, behaviour and feeding access at the same time.

Answer common questions before choosing this guppy

How big does Poecilia reticulata male tuxedo red get?

This male guppy reaches 5 cm standard length according to FishBase. Plan its aquarium around that adult size and the space required by its full social group, not the 3–4 cm dispatch grade.

What size aquarium does this guppy need?

Use a mature, filtered aquarium at least 60 cm long. Seriously Fish gives about 41 litres and a 45 × 30 cm base, while Tropical Fish Co uses FishBase’s more conservative 60 cm length for a small group.

How many Poecilia reticulata male tuxedo red guppies should I keep?

Keep five or more where aquarium capacity, sex planning, filtration, test results and other livestock allow. FishBase records groups of five or more, while Tropical Fish Co uses that number as its conservative starting policy.

Is this guppy suitable for a beginner?

It can suit a prepared beginner with a mature filter, zero ammonia and nitrite, stable mineral-bearing water, a planned group and a separation option. It is not suitable for cycling a new aquarium with fish.

What does Poecilia reticulata male tuxedo red eat?

Feed an appropriately sized, complete omnivore flake or granule once daily, giving only what the group consumes within a few minutes. Add safe algal and invertebrate variety and remove leftovers.

What temperature and pH does this fish need?

Keep it at the 22–28°C, pH 7.0–8.0 and 9–18 dGH overlap of FishBase, Seriously Fish, OATA and Tropical Fish Co guidance, with zero ammonia and nitrite.

Is Poecilia reticulata male tuxedo red aggressive or likely to nip fins?

Seriously Fish describes this guppy as very peaceful, although males may pursue one another. Avoid fin-nipping species such as tiger barbs and serpae tetras, and separate fish if persistent chasing or damage develops.

What kinds of fish or invertebrates can it live with?

Quiet-community candidates include other livebearers, rasboras, corydoras, small loricariids and non-fin-nipping tetras after full screening. Treat shrimp cautiously because small shrimp or young may be eaten.

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

Start filming the sealed parcel before opening it or floating the bag. The fish is hand-bagged in pure oxygen, carried in an insulated poly box and transported by a licensed live-animal courier; float the bag for 20–30 minutes before release.

Consult the public references

• FishBase: Poecilia reticulata — identity, distribution, male size, wild habitat, diet, environmental range and aquarium length.
• Seriously Fish: Poecilia reticulata — aquarium dimensions, water conditions, diet and compatibility.
• OATA: How to look after guppies and mollies — group water, feeding and maintenance guidance.
• RSPCA: Aquarium environment — filtration and biological waste processing.
• RSPCA: Fish health and welfare — warning signs and escalation.
• MSD Veterinary Manual: Management of aquarium fish — quarantine and water-quality-led investigation.
• OATA: Find a fish vet — UK fish-vet directory.
• Description of Poecilia wingei and Eschmeyer’s Poecilia wingei entry — distinction between the guppy and Endler’s livebearer.