Poecilia wingei 'Black Fire'

Decide whether this small livebearer fits your aquarium

Poecilia wingei black fire is a small, active Endler’s livebearer in the family Poeciliidae. It comes from Venezuela’s Campoma and Buena Vista lagoon systems and reaches a recorded maximum of 2.0 cm standard length. The black fire wording identifies its colour-labelled form; plan its care around Poecilia wingei rather than treating the colour name as a separate species or documented locality.

It suits a prepared beginner who can provide a mature filtered aquarium, measured medium-hard to hard water, a planned social group and enough capacity for reproduction. We rate it easy under those conditions. A bowl, vase or uncycled nano aquarium cannot provide the biological stability this livebearer needs.

Seriously Fish gives a species-level aquarium range of 24–30°C, pH 7.0–8.5 and 15–35 dGH, with a 45 × 30 cm base and about 41 litres. OATA’s guppy-and-molly guidance gives 20–28°C, pH 7–8, 8–18 dGH and at least 45 litres for a small group. Use the overlap for routine care: 24–28°C, pH 7–8 and 15–18 dGH.

Our complete Endler guppy care guide adds a conservative house screen of at least 60 cm aquarium length and five or more fish where filtration, measured water, the sex plan and other occupants allow.

Plan the aquarium around the recorded adult size

FishBase places Poecilia wingei in Poeciliidae and records a maximum of 2.0 cm standard length. Standard length ends at the base of the tail, so it is not the full nose-to-tail measurement seen when a fish is swimming.

The original species description measured females up to 30.4 mm standard length in a separate stream sample. That separate 3.0 cm planning reference is not a promised final length for every animal. Small body size still leaves the group needing horizontal swimming room, stable water and space to move away from persistent courtship.

The same scientific name remains current in Eschmeyer’s Catalog of Fishes. Its wild distribution includes the Campoma and Buena Vista lagoon systems in Venezuela, and FishBase records the wild species as Endangered. Captive aquarium fish must never be released outdoors or treated as part of a conservation reintroduction.

Colour and body shape cannot certify pedigree. A morphological and molecular comparison supports P. wingei as a distinct species while also showing that appearance can overlap with related guppies.

Understand the purchase unit and dispatch grade

Sold individually, with one live fish supplied per purchase. The catalogue dispatch grade is 2.5–4 cm; this describes the animal at dispatch and is not an adult-size promise. Plan the permanent aquarium around adult group needs rather than the dimensions of the fish on arrival.

Sex is guaranteed only when the selected option explicitly states male or female. This Poecilia wingei black fire listing has no sex-guaranteed option.

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.

Build quantity around the aquarium you have prepared. For an empty suitable aquarium, our house starting plan is five or more where mature filtration, measured water and future population capacity allow. If Endlers already live in the aquarium, count them and every other occupant before choosing a quantity; adding five more is not automatically appropriate.

A mixed-sex group may produce fry readily, while a single-sex plan depends on correctly identified fish. Prepare spare mature capacity and a responsible rehoming route before adding animals whose sex is not guaranteed.

Use the Endler guppy collection to compare identity, sex disclosures and purchase units across related products.

Build a mature aquarium with swimming room and cover

Prepare the aquarium before choosing livestock. If this is your first setup, follow our guide to preparing and maturing a tropical aquarium. A mature biological filter must already be processing waste so ammonia and nitrite remain at zero when fish are introduced.

Use at least 60 cm of aquarium length under our conservative house screen. Seriously Fish gives a 45 × 30 cm base and about 41 litres for this species, while OATA recommends at least 45 litres for a small group of smaller guppies. Aquarium shape matters alongside litres: leave open horizontal water for continuous swimming and do not turn the entire footprint into dense decoration.

Divide the layout into useful zones

• Open water: leave a clear route long enough for normal group swimming.
• Sight breaks: arrange plants or wood so a pursued fish can move out of another fish’s direct view.
• Rest and shelter: provide planted or structured areas without trapping fish in dead ends.
• Accessible surface: keep enough open surface for gas exchange and routine observation.

A planted arrangement is strongly recommended, and floating plants can add cover. Dense planting may also increase fry survival, so choose the amount of cover together with the population plan. More surviving fry can quickly change the load placed on the filter and the room each fish can use.

Water flow can suit these active fish, but they should be able to hold position and feed without constant effort. In an aquarium around 41 litres, the species guidance uses a turnover of four to five times the volume each hour, equivalent to roughly 165–205 litres per hour. Protect the filter intake where a small fish or fry could be drawn against it.

Set stable water inside the shared care range

Use 24–28°C, pH 7–8 and 15–18 dGH for routine aquarium planning. These values are the overlap of the species range from Seriously Fish and OATA’s broader guppy guidance, so they do not widen the species parameters. Keep ammonia and nitrite at zero.

Measure the water rather than relying on a postcode, a heater dial or a description such as hard or soft. Our water chemistry guide explains what temperature, pH, GH, KH, ammonia, nitrite and nitrate tell you. Record actual numbers so gradual changes are visible before fish behaviour deteriorates.

Compare before changing anything

1. Test the aquarium at its normal operating temperature.
2. Confirm ammonia and nitrite are zero before adding fish.
3. Measure pH and general hardness rather than assuming tap water is suitable.
4. Use the water matcher to compare measured aquarium values with the target range.
5. Make any necessary adjustment gradually and re-test before livestock is introduced.

Use a thermostatically controlled aquarium heater where room conditions cannot hold the target throughout the year. Verify the water with an independent thermometer and position the aquarium away from direct sun and draughts that can drive rapid changes.

Do not chase pH with unmeasured additives. A sudden correction can be more disruptive than a stable value, and altering one part of the chemistry can also affect hardness. Make a measured plan, change one controllable factor at a time and confirm the result before repeating it.

Protect the biological filter during weekly maintenance

RSPCA aquarium guidance explains that fish release toxic ammonia and that a working biological filter supports bacteria which convert ammonia to nitrite and then nitrate. A filter must therefore remain established, flowing and appropriately sized for every animal using the aquarium.

OATA strongly recommends a 25% water change at least once a week. Treat replacement tap water with conditioner before it enters the aquarium so chlorine or chloramine does not harm fish or the filter community. Match the replacement water carefully enough to avoid an abrupt temperature or chemistry swing.

Use one repeatable weekly routine

• Test ammonia and nitrite and confirm both remain at zero.
• Check nitrate against the tap-water baseline; OATA recommends no more than 20 mg/l above that normal level.
• Remove approximately 25% of the aquarium water while siphoning accumulated solid waste where needed.
• Check the filter intake and outlet for reduced flow or blockages.
• Observe every fish for feeding access, breathing, swimming and fin condition.

If filter media needs cleaning, rinse it lightly in removed aquarium water; do not run it under the tap. Do not replace all mature media at once or discard it merely because a calendar interval has passed. Its bacterial community performs the filtration work that protects the fish from accumulating waste.

A planted aquarium still needs testing and maintenance. Plants can complement filtration, provide cover and use some nutrients, but they do not show that the aquarium is cycled or that stocking pressure is safe.

When a test departs from normal, pause further livestock additions and deal with the water-quality problem first. Repeatedly rising ammonia or nitrite indicates that waste production, feeding, filter performance or the speed of stocking has exceeded the established system’s capacity.

Feed an appropriately small complete diet

Poecilia wingei is omnivorous. Seriously Fish describes wild feeding on zoobenthos and detritus and recommends including vegetation in the aquarium diet. Use an appropriately small, good-quality complete flake or granule with a high algae content as the staple.

OATA suggests one daily portion that the group can finish within a few minutes. Particle size matters: the smallest fish should be able to take food without repeated spitting, and distribution matters because faster individuals can otherwise take most of the portion.

Judge the portion by what the group does

1. Start with a small amount spread across more than one feeding point.
2. Watch whether every fish approaches, takes and swallows food.
3. Stop adding food when interest falls rather than filling a fixed scoop.
4. Remove leftovers that repeatedly remain after a few minutes.
5. Adjust the next portion when group size or feeding response changes.

Suitable variety can include small live or frozen items such as daphnia, small bloodworm, tubifex or cyclops; OATA particularly notes that Endlers may need small items such as cyclops. Variety supplements the complete staple rather than replacing it with one frozen food.

Do not rely on visible algae as a balanced diet, and do not collect live food from an unknown pond. Store dry food so it remains dry, handle frozen food safely and avoid thawing and refreezing it. Uneaten food breaks down into waste, so overfeeding becomes a filtration and water-quality problem as well as a feeding problem.

At each meal, compare appetite and body condition across the whole group. A fish that hangs back once may simply have lost access, but repeated refusal, weight change or difficulty taking food belongs in the health check rather than being answered with a larger general portion.

Choose the group and fry plan before adding fish

These livebearers need companionship. OATA advises at least three guppies, while our more conservative house recommendation is five or more where aquarium capacity, sex planning and other occupants allow. Five is a planning screen rather than permission to ignore behaviour or calculate a maximum directly from litres.

For a new adult group, start by checking whether the aquarium passes the 60 cm length screen and whether its mature filter is supporting zero ammonia and nitrite. Then count all existing animals, consider how much open swimming room remains and decide how fry would be housed or rehomed.

Match the social plan to its consequences

In mature fish, the anal fin is the main visible sexing feature: a male has a narrow modified anal fin called a gonopodium, while a female has a broader triangular anal fin. Males are often smaller and more conspicuously patterned, but colour, body size or a rounded abdomen alone is not proof.

Mixed-sex groups can reproduce readily. A laboratory life-history study examined only ten litters and 122 fry under one regime, so do not plan capacity around one promised interval or brood number. Prepare a mature separation option and a responsible route for rehoming before fry appear.

If persistent pursuit prevents a fish from feeding, causes continuous hiding or leads to fin damage, intervene by using the prepared separation option and reassessing space, sex balance and sight breaks. Adding another fish is not an automatic cure for an aquarium that has already reached its safe capacity.

Prepare the aquarium and follow the arrival steps

Complete testing and maintenance before the journey. The aquarium should be mature, heated where needed, within 24–28°C, pH 7–8 and 15–18 dGH, with zero ammonia and nitrite. Check that the filter is flowing normally and that the group plan leaves usable swimming room.

Read the current delivery and Live Arrival Guarantee policy before ordering. Live fish cannot be left unattended, so arrange for someone to receive the parcel and follow the reporting procedure if the animal’s condition causes concern.

Use this first-day sequence

1. Receive the parcel in person.
2. Start filming while the parcel is still sealed and the outer box is visible.
3. Open it in one continuous take while continuing to film.
4. Show the fish still inside the sealed bag before anything is disturbed.
5. Float the bag for 20–30 minutes.
6. Release the fish without pouring the bag water into the aquarium.

During the first week, look at the whole group rather than only the new fish. Confirm that each animal reaches food, can move away from pursuit and is not trapped by the intake or pushed continuously by the outlet. Check for clamped or damaged fins, unusual surface hanging, bottom sitting, erratic swimming or reduced feeding.

Delay any further livestock addition while the filter adjusts to increased waste and feeding. OATA warns that stocking too quickly can cause new tank syndrome when nitrifying bacteria cannot yet process the increased load.

Respond to health changes with water checks first

A settled Endler should swim steadily, breathe regularly, hold its fins normally and feed consistently. Changes in swimming, colour, temperament, breathing, appearance, body condition or appetite are prompts to investigate; they are not diagnoses by themselves.

RSPCA fish-health guidance supports checking husbandry and escalating concerning signs. Test ammonia, nitrite, nitrate, pH and temperature first, then inspect the heater, filter flow, recent maintenance, food, new occupants and social behaviour.

Pair the sign with the first action

Contact us promptly about health changes connected with arrival. For persistent or severe signs, seek a fish vet and provide measured water results, timing, photographs and details of recent aquarium changes. Do not select salt, extra heat or medication from one symptom alone.

A study of spinal deformities recorded 22 affected fish among 600 from one captive line and discussed several possible contributors. A curved body does not identify one cause or establish a species-wide rate, so do not diagnose inbreeding from appearance or breed an affected fish without expert assessment.

At the end of the first month, compare current feeding, body condition, pursuit and test results with your first-week notes. Stable measurements and normal group behaviour support the plan; deterioration calls for intervention rather than another livestock addition.

Screen every proposed companion before combining groups

Seriously Fish advises that this very small livebearer is not suitable for a general community chosen without careful screening. Compatibility depends on the exact species, adult size, water needs, behaviour, feeding speed, social group and combined use of the aquarium.

Reject a match when one decisive risk remains

Small peaceful species such as dwarf corydoras, peaceful tetras and small rainbowfish are examples from the species guidance, but none is a universal match. The exact companion must pass the water, footprint, substrate, group-size and feeding checks in its own right.

Do not add a companion merely to fill a region of the aquarium or because both fish are described as peaceful. Two peaceful social species can still require more floor area, swimming length or feeding access than one aquarium provides.

Ask us for a stocking and compatibility assessment when you have the aquarium dimensions, measured temperature, pH and hardness, filter details, current livestock and intended group sizes. No static combination guarantees individual behaviour, so keep observation and a ready separation plan as part of the decision.

Manage hybridisation and shrimp risk explicitly

Avoid keeping Poecilia wingei with common guppies, Poecilia reticulata. The two species can hybridise and produce fertile offspring, so colour, tail shape or an informal trade label cannot certify later generations as pure.

Maintain a separate mature aquarium for a traceable P. wingei line. Do not distribute fry as documented P. wingei based only on appearance.

Treat shrimp compatibility as conditional

No fish is guaranteed shrimp-safe. Adult Neocaridina or Amano shrimp may coexist in an aquarium that meets both animals’ temperature, mineral, space and feeding needs, but small shrimp and shrimplets may be eaten. Feeding competition can also occur.

Dense moss or other cover can reduce exposure, but it cannot guarantee survival. More cover may also increase Endler fry survival and accelerate crowding, so assess the layout against both shrimp risk and the livebearer population plan.

Never use shrimp as a substitute for maintenance or assume that scavenging makes the animals compatible. Both groups need appropriate food, safe access to it and water that fits their own requirements.

For every mixed aquarium, watch feeding access, hiding, pursuit and injuries after introduction. Move an animal to the prepared mature separation setup when behaviour shows that the planned combination is failing; do not wait for repeated damage to establish that intervention is necessary.

Answer the main questions before choosing

How big does Poecilia wingei black fire get?

FishBase records a maximum of 2.0 cm standard length for Poecilia wingei; standard length ends at the base of the tail.

What size aquarium does Poecilia wingei black fire need?

Use a mature filtered aquarium at least 60 cm long under our house screen. Seriously Fish gives a 45 × 30 cm base and about 41 litres, while OATA recommends at least 45 litres for a small group of smaller guppies.

How many Poecilia wingei black fire should I keep together?

Our house recommendation is five or more where capacity and the sex plan allow, while OATA advises at least three guppies.

Does this fish suit a beginner?

Poecilia wingei black fire can suit a prepared beginner who provides a mature filtered aquarium, tested water, a planned group and capacity for fry.

What does Poecilia wingei black fire eat?

Feed an appropriately small complete flake or granule with high algae content once daily in an amount finished within a few minutes, with suitably small live or frozen variety.

What temperature and pH does it need?

Keep this fish at 24–28°C, pH 7–8 and 15–18 dGH, the overlap of Seriously Fish species guidance and OATA group guidance, with ammonia and nitrite at zero.

Is this Endler aggressive or likely to nip fins?

Males are peaceful towards one another, while females may act territorially; monitor pursuit, feeding access and fin condition, and avoid species known to nip guppy fins.

Which animals can Poecilia wingei black fire live with?

Consider dwarf corydoras, peaceful tetras or small rainbowfish only when their water, space, feeding and social needs overlap. Avoid fish large enough to eat it, species known to nip guppy fins and common guppies; small shrimp and shrimplets may be eaten.

How does this fish arrive alive in the UK, and how should I acclimatise it?

Start filming every delivery while the parcel is still sealed, then open it in one continuous take and show the fish still inside the sealed bag. Arrange for someone to receive the parcel, float the bag for 20–30 minutes, then release the fish without pouring the bag water into the aquarium.

Check the principal references

• FishBase: Poecilia wingei — identity, family, wild distribution, conservation category and recorded length.
• Seriously Fish: Poecilia wingei — aquarium dimensions, water ranges, diet and behaviour.
• OATA: guppies and mollies — UK group husbandry, maintenance, feeding and social guidance.
• RSPCA aquarium environment — filtration and biological waste processing.
• RSPCA pet fish health — health observations and escalation.
• Tropical Fish Co delivery policy — arrival, floating time and Live Arrival Guarantee terms.
• Eschmeyer’s Catalog of Fishes — current scientific name and family placement.
• Original description of Poecilia wingei — type locality and measured specimens.
• Schories, Meyer and Schartl — species distinction and overlapping morphology.
• Arbuatti, Della Salda and Romanucci — spinal deformities observed in one captive line.
• Hernández-López and Luna-Vivaldo — limited laboratory observations of reproduction and early life.