Blue Panda Endler Guppy (Poecilia endler)

Understand what this Blue Panda Endler is

The Blue Panda Endler Guppy (Poecilia endler) is a small freshwater livebearer in the Poeciliidae family. Its species is associated with the Campoma and Buena Vista lagoon systems of Venezuela, and the largest standard length recorded in the original description rounds to 3 cm. It suits a prepared beginner who can provide mature filtration, moderately hard water, a planned social group and enough capacity for possible fry.

FishBase now lists it as Poecilia wingei, the valid name also carried by Eschmeyer’s Catalog of Fishes. “Blue Panda” is the trade label for this aquarium form; colour wording alone does not establish a documented locality line or pedigree.

Small adult size does not make an uncycled bowl or unstable nano aquarium suitable. This active fish needs horizontal swimming room, cover, tested water and a deliberate population plan. Our care assessment is easy for a prepared keeper, but that rating still assumes weekly maintenance and regular observation.

For the wider reasoning behind the house plan, read our complete Endler Guppy care guide.

Check the fish and dispatch size you receive

One purchase supplies one live fish. The dispatch grade is 1–2 cm, which describes the fish’s approximate size when sent rather than its adult length. Plan the permanent aquarium around the recorded 3 cm adult standard length, the social group and the combined needs of every occupant.

Sex is guaranteed only when the selected option explicitly states male or female. This Blue Panda Endler Guppy listing has no sex-guaranteed option.

Build the population plan around that disclosure. A mixed-sex group may reproduce readily, while a deliberately single-sex group requires fish whose sex has been explicitly established. Colour intensity, body size or the Blue Panda name should not replace a clear sex determination.

The trade label identifies the form offered, but it does not certify a pure locality line. If preserving a documented line matters, keep records for every fish and avoid housing it with common guppies because the two species will crossbreed.

Decide whether the care plan fits your aquarium

Keep the group at 24–28°C, pH 7.0–8.0 and 15–18 dGH. These routine values are the overlap of Seriously Fish species guidance and OATA’s guppy-and-molly group guidance. Use a mature aquarium of at least 45 litres and 60 cm length under our conservative house plan, then allow extra capacity for other livestock or fry.

Plan for five or more where aquarium capacity and the sex plan allow. OATA suggests at least three guppies; our higher house recommendation gives the keeper more scope to observe social behaviour without treating one pair as a complete group.

Count the demands of every social group rather than assigning a fixed number of fish to each litre. Filtration, swimming length, behaviour and future population growth all affect the final stocking decision.

Plan the aquarium around the adult size

Plan around an adult standard length of 3 cm. The original species description recorded a female reaching 30.4 mm standard length in a separate stream sample, rounded here to 3 cm. Standard length stops at the base of the tail, so the visible fish can look longer when its tail fin is included.

Published figures differ: FishBase lists a smaller female maximum of 2.0 cm standard length, while Seriously Fish gives 2.5 cm standard length. The 3 cm planning figure prevents the smaller records from being treated as a promise that every adult will remain below them.

Use length and volume together

Seriously Fish gives a 45 × 30 cm base and about 41 litres for the species. OATA recommends at least 45 litres for a small group of the smaller guppy species. Our conservative adult-group screen adds at least 60 cm aquarium length, mature filtration, zero detectable ammonia and nitrite, and enough room for five or more fish where the population plan allows.

Use at least 45 litres and 60 cm length as the practical starting point. The extra length gives this active fish usable swimming room and more scope for cover and sight breaks. A larger aquarium generally gives more stable environmental conditions, but capacity still depends on filtration, maintenance, other occupants and any fry.

Do not convert the minimum into a litres-per-fish formula. A 45-litre aquarium does not automatically accommodate a particular number of adults, and a longer aquarium may make better use of the same nominal volume than a short, tall shape.

Check the usable footprint

Measure the aquarium itself rather than relying on a model name. Confirm that it reaches at least 60 cm in length, then look at how much of that length remains open after the filter, plants and ornaments are installed. A nominally suitable aquarium can still lose useful swimming room when bulky decor divides the footprint into narrow pockets.

For a worked planning check, start with the adult group of five or more, add every existing occupant and then consider possible fry. If the filter, cover or swimming space would become inadequate after reproduction, prepare mature spare capacity before adding the group. If an individual repeatedly cannot leave another fish’s path, revise the layout or separate fish rather than assuming the litre figure alone makes the arrangement suitable.

Keep water within the practical overlap

Maintain 24–28°C, pH 7.0–8.0 and 15–18 dGH. Keep ammonia at 0 mg/L and nitrite at 0 mg/L. OATA also advises keeping nitrate no more than 20 mg/L above the normal level in the tap water used for the aquarium.

The temperature, pH and general-hardness targets sit within both the species ranges from Seriously Fish and OATA’s broader guppy-and-molly ranges. Seriously Fish describes this as a moderately hard-water fish and advises long-term maintenance in moderately hard or harder water.

Measure before making changes

• Use an independent thermometer to check the water rather than relying only on a heater dial.
• Use a thermostatically controlled aquarium heater where room conditions cannot hold the target throughout the year.
• Test aquarium and replacement water so changes in pH and mineral content can be made gradually.
• Treat replacement tap water with conditioner before adding it to the aquarium.
• Avoid rapid temperature or chemistry swings.

OATA’s group guidance also gives 5–15 dKH for carbonate hardness. That value helps assess buffering, while the 15–18 dGH range above remains the practical general-hardness target for this fish.

Use our water chemistry guide to understand the tests, then enter measured values in the water matcher when comparing an aquarium with this care plan. Test rather than assuming that all tap water in a postcode or region has the same composition.

Act on the reading you obtain

If the thermometer shows 23°C, raise the temperature gradually into the 24–28°C target instead of making an abrupt correction. If pH or hardness falls outside the target, compare the aquarium with the conditioned replacement water before changing anything; that comparison helps identify whether the difference begins at the tap or develops inside the aquarium.

Any detectable ammonia or nitrite needs immediate investigation. Check livestock load, uneaten food, filter flow and recent maintenance, then continue testing while the cause is addressed. A clear-looking aquarium is not a substitute for a numerical test, and a reading taken before fish are added does not remove the need for weekly checks after stocking.

Build mature filtration, swimming room and cover

Use a mature biological filter in every aquarium. The RSPCA explains that biological filtration supports bacteria that convert toxic ammonia into nitrite and then safer nitrate. A planted aquarium still needs this filtration and the water testing that confirms it is working.

Seriously Fish recommends a planted setup with floating plants and notes that these active fish tolerate water movement. Leave open horizontal water for swimming, then use live plants, artificial plants or suitable ornaments to create shelter and visual breaks. Check artificial plants and ornaments for surfaces that could damage fins.

Match the filter to the aquarium

For the Seriously Fish example of about 41 litres, four to five turnovers per hour corresponds to a filter rated around 165–205 litres per hour. Select filtration for the actual aquarium and its whole population. In a species-only setup, extremely powerful filtration is unnecessary, but the filter remains essential.

Protect the intake where a small fish or fry could be trapped. Check the filter for blockages and make sure every fish can hold position and swim without constant effort.

Maintain the biological system

• At least once every week, change 25% of the water.
• Test ammonia and nitrite at least weekly.
• Use a siphon to remove settled waste where necessary.
• Condition replacement tap water before it enters the aquarium.
• Rinse dirty filter media lightly in aquarium water removed during the water change.
• Do not rinse filter media under the tap.

Never replace all established filter media merely because a calendar date has arrived. Preserve the bacterial population that processes fish waste, and investigate any loss of flow rather than allowing a blockage to continue.

Review the layout after stocking

Watch the aquarium from the front and both ends during normal swimming and feeding. Every fish should be able to cross open water, enter cover and leave another fish’s path without becoming trapped in a dead end. If plants grow across the full swimming length, trim or reposition them while retaining useful shelter.

Check flow at the surface, around dense planting and behind ornaments. A filter rating describes the equipment, but blockages and crowded decor can alter circulation. If fish continually struggle in one area, change the outlet direction or layout while retaining filtration for the complete aquarium. If waste repeatedly settles in one pocket, siphon that area during the weekly water change and adjust the arrangement so routine maintenance can reach it.

Feed small, complete portions once a day

Use an appropriately small, complete flake or granule as the staple. Seriously Fish records an omnivorous diet of zoobenthos and detritus in nature and says the diet should contain some vegetation. OATA recommends a good-quality flake or granule with a high algae content for guppies and mollies.

Offer only what the group can eat within a few minutes, once a day. Particles should be small enough for the smallest fish to take without repeated spitting. Spread the portion so that every fish has an opportunity to feed, then reduce the next portion if food repeatedly remains.

Add suitable variety

• Use small live or frozen foods such as daphnia.
• Small bloodworm or tubifex can add variety when appropriately sized.
• Cyclops may suit the smaller mouth size of Endler guppies.
• Keep the complete food as the nutritional base rather than treating one frozen item as a complete diet.

Remove persistent leftovers because uneaten food breaks down and adds waste to the water. Store dry foods so they remain usable, and avoid thawing and refreezing frozen food.

Visible algae does not replace a balanced diet, and this livebearer should not be treated as an aquarium-cleaning tool. If the aim is to consider livestock selected for algae management, browse the algae eaters collection and assess each animal’s adult size, diet, water and social needs separately.

Watch feeding response and body condition across the group. A fish that suddenly misses food, spits repeatedly or is excluded by another fish needs investigation rather than a larger general portion that leaves more waste behind.

Manage the social group and possible fry

Plan for five or more fish where capacity and the intended sex composition allow. OATA suggests at least three guppies and, for mixed groups, two females to each male to reduce stress on females or other inhabitants. Our house plan uses five or more as a conservative starting point, not as permission to ignore behaviour or filter capacity.

Males are described as peaceful towards one another by Seriously Fish, but courtship and display competition still require monitoring. Females may behave territorially, so watch whether every fish can feed, swim normally and move away from another. Persistent pursuit, cornering, hiding, missed feeding or fin damage calls for intervention and a mature separation option.

This is a livebearer, and mixed-sex groups may reproduce readily. Arrange mature spare capacity and a responsible rehoming route before young fish appear. Do not move adults or fry into an uncycled container simply to relieve crowding.

A life-history study examined ten litters and 122 fry under one laboratory regime. That limited result should not become a countdown or brood-size promise for a home aquarium. Population growth depends on the individual fish and conditions, so plan around the possibility of fry rather than a fixed interval.

Dense planting can increase cover for young fish and therefore increase survival. Decide whether that outcome fits the population plan before filling the aquarium with fry shelter.

Use weekly behaviour checkpoints

At feeding time, count how many fish approach food and note whether one individual is repeatedly displaced. Later, check whether the same fish remains hidden, holds its fins differently or avoids open water. A single chase is less useful than a repeated pattern that prevents feeding or normal movement.

During the first month, review group behaviour after maintenance, layout changes and every addition of livestock. If pursuit becomes persistent, use the prepared mature separation option and reassess sex composition, cover and usable swimming length. Adding another fish is not the automatic answer because it also adds waste and can intensify an already crowded population.

Prepare the aquarium before arrival

Mature and test the aquarium before the fish travels. If this is your first setup, follow our guide to preparing and maturing a first tropical aquarium. Confirm 24–28°C, pH 7.0–8.0, 15–18 dGH, 0 mg/L ammonia and 0 mg/L nitrite before adding livestock.

OATA advises increasing fish numbers slowly because the beneficial bacterial population must respond when fish and feeding are added. Count existing occupants and possible fry rather than treating unused litres as automatic capacity.

Follow the arrival procedure

Our delivery and Live Arrival Guarantee policy sets out these steps:

1. Receive the parcel in person and start filming before it is opened, with the sealed parcel and outer box visible.
2. Open and inspect the parcel the same day in one continuous take, showing the fish inside the sealed bag before anything is disturbed.
3. Float the bag for 20–30 minutes before releasing the fish.
4. Release the fish without pouring the bag water into the aquarium.
5. If the fish’s condition causes concern, contact us the same day with the order number and continuous unboxing video.

Use behaviour as a settling check

Watch swimming, balance, breathing, fin position and feeding response. Pale colour or hiding after a journey has several possible causes, so check the fish and aquarium rather than assigning a diagnosis from colour alone.

During the first week, keep to the established feeding and testing routine and investigate any ammonia or nitrite reading immediately. During the first month, continue checking whether every fish reaches food and can use both open water and cover. Add further livestock only slowly and only when water tests and behaviour remain suitable.

Record the first-month baseline

Write down temperature, pH, hardness, ammonia and nitrite before introduction, then retain the readings beside later weekly tests. A short record makes a change easier to identify than memory alone. Note feeding response, breathing and whether each fish uses both shelter and open water.

If ammonia or nitrite rises above 0 mg/L after the group is added, treat that as a change in the biological system and investigate immediately. Check filter flow, uneaten food and the pace of stocking. If readings remain at zero but one fish stops feeding or hides persistently, examine social pressure, injury and other warning signs instead of assuming every problem begins with water chemistry.

Respond promptly to health warning signs

A settled fish should swim steadily, breathe regularly, hold its fins normally and feed consistently. Warning signs include hanging at the surface, sitting on the bottom, erratic swimming, loss of balance, unusual hiding, faster or slower gill movement, damaged or clamped fins, spots, fluffy growths, wounds, swelling or a sudden loss of appetite.

Check the environment first

1. Test ammonia, nitrite, nitrate, pH and temperature.
2. Check the heater, filter flow and recent maintenance.
3. Look for pursuit, feeding exclusion, injury or a recent change in occupants.
4. Compare the change over time rather than relying on one glance.
5. Seek prompt veterinary assessment when signs are severe or persist.

The RSPCA’s fish-health guidance supports water-quality-first checks and veterinary escalation. Avoid choosing salt, heat or medication from one symptom because similar signs can have different causes.

A study of one captive line recorded spinal deformities in 22 of 600 fish and discussed several possible genetic, nutritional, environmental or traumatic contributors. Treat a curved body as a sign requiring assessment, not as proof of one cause or a rate that applies to every Endler.

Do not breed a visibly affected fish while its condition remains unclear. Maintain clean, stable water, protect feeding access and use veterinary direction for diagnosis and treatment.

Screen every proposed fish companion

Avoid fish large enough to eat an Endler and species likely to nip its fins, such as barbs. Avoid common guppies when maintaining an Endler line because Poecilia wingei and Poecilia reticulata will crossbreed. If breeding is the goal, Seriously Fish advises keeping Endlers alone.

Potential companions named by Seriously Fish include dwarf corydoras, small peaceful rainbowfish such as Iriatherina werneri or Pseudomugil species, and peaceful tetras. These are candidates for assessment rather than universal matches.

Apply every check before combining fish

The species’ small size makes a general community approach risky. Peaceful behaviour alone is not enough if a companion is too large, needs incompatible water or outcompetes the group at feeding time.

For a stocking assessment, contact us with the aquarium dimensions, measured water values, filter, existing livestock and the number of each species. Compatibility remains conditional on the individual animals and the complete setup.

Protect shrimp and line identity with a cautious plan

Do not treat any fish as automatically safe with shrimp. Adult Neocaridina or Amano shrimp may coexist in a suitable aquarium, but small shrimp and young can be eaten, and feeding competition may occur. Dense cover reduces exposure without guaranteeing survival.

Before combining them, check that the shrimp’s temperature and mineral requirements overlap 24–28°C, pH 7.0–8.0 and 15–18 dGH. Provide food for each animal and continue normal maintenance rather than relying on shrimp to remove waste.

Keep common guppies separate

Avoid common guppies where species identity or a documented line matters. The two species can produce fertile hybrids, so future offspring may no longer represent the original line. A separate mature aquarium is the clear way to prevent crossbreeding.

Appearance does not settle ancestry. A morphological and molecular comparison supports Endlers as a distinct species while showing overlap in appearance measurements. Blue Panda colour, tail shape or an informal label therefore should not be used alone to describe offspring as pure.

If lineage is not the objective, the same welfare checks still apply: compatible water, enough room, feeding access, cover and a separation plan. Label any offspring honestly when ancestry is mixed or uncertain.

Answer common buyer questions

How big does a Blue Panda Endler Guppy get?

Plan for an adult standard length of 3 cm. Standard length ends at the base of the tail, so the complete fish can look longer when the tail fin is included.

What size aquarium does a Blue Panda Endler Guppy need?

Use a mature aquarium of at least 45 litres and 60 cm length under Tropical Fish Co’s house plan. OATA gives at least 45 litres for a small group of the smaller guppy species, while the extra length supports active swimming and a planned social group.

How many Blue Panda Endler Guppies should I keep?

Plan for five or more where aquarium capacity and the sex plan allow under Tropical Fish Co’s house recommendation. OATA suggests at least three guppies, but neither number replaces checks for filtration, behaviour, other livestock or fry.

Does a Blue Panda Endler Guppy suit beginners?

It can suit a prepared beginner and carries an easy store assessment, but it still needs a mature filtered aquarium, weekly testing and maintenance, moderately hard water, a social plan and a response plan for fry or persistent pursuit.

What does this fish eat?

Feed an appropriately small complete flake or granule with vegetation in the diet, once a day in an amount eaten within a few minutes. Add suitably small live or frozen variety such as daphnia or cyclops.

What temperature and pH does a Blue Panda Endler Guppy need?

Keep it at 24–28°C, pH 7.0–8.0 and 15–18 dGH. These values are the overlap of Seriously Fish species guidance and OATA guppy-and-molly group guidance; maintain 0 mg/L ammonia and 0 mg/L nitrite.

Is it aggressive or likely to nip fins?

It is generally peaceful, although females may act territorially and courtship or display competition needs monitoring. OATA warns that guppies should not be housed with fish likely to nip their fins, such as barbs.

Which animals can a Blue Panda Endler Guppy live with?

Seriously Fish names dwarf corydoras, small peaceful rainbowfish such as Iriatherina werneri or Pseudomugil species, and peaceful tetras as candidates. Every companion must still pass water, adult-size, predation, fin-nipping, space and feeding checks; avoid common guppies.

How does it arrive alive in the UK?

Tropical Fish Co hand-packs live fish in pure oxygen inside an insulated box, adding a heat pack when the weather calls for it. Receive the parcel in person, film continuously from the sealed parcel, inspect it the same day and float the bag for 20–30 minutes before release.

Consult the public references

• FishBase: Poecilia wingei — identity, family, distribution and recorded length.
• Seriously Fish: Poecilia wingei — aquarium dimensions, water, diet and compatibility.
• OATA: How to look after guppies and mollies — UK group-care guidance.
• Tropical Fish Co delivery policy — packing, arrival and acclimatisation procedure.
• RSPCA aquarium environment guidance — filtration and biological waste processing.
• Eschmeyer’s Catalog of Fishes — valid scientific name and family placement.
• Original description of Poecilia wingei — type locality, measured material and habitat observation.
• Morphological and molecular comparison of guppy species — species distinction and overlapping appearance measurements.
• Spinal deformities in one captive Poecilia wingei line — documented case series and possible contributors.
• Life history traits of Endler’s fish — limited laboratory observations of litters and fry.
• RSPCA pet fish health guidance — warning signs, water checks and veterinary escalation.