Endler Guppy Care Guide: Poecilia wingei for UK Aquarists

The Endler Guppy (Poecilia wingei) is one of the most underrated nano fish in the UK hobby. Smaller, hardier, and more intensely coloured than the common guppy, this Venezuelan livebearer has earned a devoted following among planted-tank keepers who want maximum colour impact in minimum space. We stock Endler Guppies in our UK shop, and this is the complete endler guppy care guide I maintain for the species — covering everything from endler guppy tank size and water chemistry to endler guppy tank mates, diet, breeding, the N-class purity system, colour varieties, shrimp compatibility, and the population-control strategies every keeper needs. Every claim is backed by cited sources — FishBase^[1] for scientific data, Seriously Fish^[2] for hobbyist-verified care, and my own notes from keeping and breeding this species for years.

The Endler Guppy, Poecilia wingei, was first collected from Laguna de Patos in Venezuela by Professor John Endler in 1975 and later described as a distinct species separate from the common guppy. At just 2-3.5 cm adult endler guppy size, males are among the most intensely coloured freshwater fish available in the UK hobby — metallic greens, neon oranges, electric blues, and deep blacks packed into a body barely larger than a fingernail. Females are plain olive-grey, larger than males, and built for one thing: producing fry at a rate that can overwhelm an unprepared keeper. For aquarists building a nano livebearer planted tank, a shrimp-compatible community, or simply wanting a fish that makes every visitor ask what it is, the Endler Guppy is one of the strongest choices available. Understanding the difference between endler vs guppy is essential before buying — these are separate species with different care expectations, and hybridisation is a real concern for hobbyists who care about genetic purity.

Classification

• Order: Cyprinodontiformes
• Family: Poeciliidae
• Genus: Poecilia

Poecilia wingei sits within the same genus as the common guppy (Poecilia reticulata), mollies (Poecilia sphenops), and other popular livebearers. Despite the close family relationship, P. wingei evolved in geographic isolation in Venezuela and is genetically distinct. The two species can interbreed and produce fertile hybrid offspring, which is why serious endler keepers are careful to maintain strain purity. The hobby recognises three classes — N-class (pure wild-type), P-class (phenotypically pure but unverified lineage), and K-class (known hybrids) — a system explained in full in the purity section below.

Endler vs Guppy: What Is the Difference?

The question endler vs guppy is the single most common query from keepers discovering this species for the first time. Although both belong to Poecilia and share superficial similarities — live-bearing, peaceful, colourful — there are meaningful differences in size, colour pattern, hardiness, and breeding behaviour that matter for stocking decisions.

Size: Male endlers reach 2-2.5 cm. Male common guppies reach 3-5 cm. Female endlers reach 3-3.5 cm. Female common guppies reach 5-6 cm. This size difference makes endlers genuinely suitable for nano tanks where common guppies would be cramped.

Colour pattern: Male endlers display intense metallic and iridescent colours in bold geometric patches — neon greens, vivid oranges, blacks, and electric blues arranged in species-typical patterns. Common guppies have been selectively bred for flowing finnage and softer colour gradients. Endler colours look painted on; guppy colours look blended.

Finnage: Endler males have short, compact tails — usually a rounded or sword-shaped caudal with minimal trailing tissue. Common guppy males have been bred for elaborate fan tails, delta tails, half-moons, and other flowing shapes. The compact endler tail means faster swimming, better manoeuvrability, and far fewer fin-rot problems.

Hardiness: Endlers are broadly considered hardier than fancy guppies. They tolerate a wider range of water parameters, are less prone to the fin diseases and genetic weakness that plague heavily line-bred guppy strains, and recover from shipping stress faster.

Breeding rate: Both species breed prolifically, but endlers are faster. Gestation is typically 23-28 days, broods arrive more frequently, and fry grow quickly. Population management is a bigger concern with endlers than with common guppies.

Interbreeding risk: Endlers and common guppies will hybridise freely if housed together. The resulting offspring are fertile, meaning the endler genetics are permanently diluted. If you care about keeping pure Poecilia wingei, never mix the two species in the same tank. This is the main reason the hobby developed the N/P/K classification system.

The N-Class System: Understanding Endler Purity

The endler hobby uses a three-tier classification system to describe the genetic background of any given fish. Understanding this system is important when buying endlers, because it affects both value and conservation.

N-class (pure): Fish with a documented lineage traceable to original wild-caught Poecilia wingei from Laguna de Patos or other verified Venezuelan collection sites. N-class endlers are the gold standard for breeders and conservation-minded hobbyists. They display species-typical colour patterns and body shape. These are the most expensive and hardest to source.

P-class (phenotypically pure): Fish that look like pure Poecilia wingei in body shape, size, and colour pattern but lack a documented wild-caught lineage. Most endlers sold in the UK hobby fall into this category. They appear identical to N-class fish but their ancestry cannot be verified beyond the breeder's word. For the majority of community tank keepers, P-class endlers are perfectly fine.

K-class (known hybrid): Fish that are confirmed or suspected crosses between Poecilia wingei and Poecilia reticulata. K-class endlers may display unusual colour combinations, longer finnage, or larger body size than pure endlers. They are attractive fish in their own right, but they are not Poecilia wingei in the strict sense. Many colourful endler strains sold in shops — tiger endlers, black bar endlers with unusual tail patterns — are K-class hybrids.

For most UK aquarists buying endler guppies for a community or nano display, the practical advice is simple: P-class fish from a reputable breeder offer the best balance of quality, authenticity, and value. If you are serious about endler conservation, seek out N-class stock from verified breeders and keep them in a single-species tank with no guppies.

Colour Varieties and Strains

One of the great attractions of endler guppies is the sheer range of colour forms available. Unlike common guppies where colour variety comes from centuries of selective breeding, many endler colour strains reflect natural variation within Poecilia wingei populations, enhanced and stabilised through careful captive breeding.

Black Bar Endler: The classic wild-type pattern. Males display a bold black vertical bar mid-body, with vivid orange and metallic green surrounding it. This is the pattern most closely associated with the original Laguna de Patos collection and is the benchmark for N-class identification.

Lime Green Endler: Males show a dominant metallic lime-green body with minimal black markings. The green is iridescent and shifts depending on the angle of light — a trait that photographs rarely capture properly. These are stunning under low to moderate lighting in planted tanks.

Orchid Endler: A spectacular strain with purple-violet and metallic blue colouration. Males display layered colours that include hints of orange and green alongside the dominant purple tones. Among the most sought-after endler colour forms.

Tiger Endler: Males show bold orange and black banding reminiscent of tiger stripes. These are usually K-class hybrids but are extremely popular for their high visual impact. Excellent community fish even if they are not pure wingei.

Flame Tail Endler: Males display a vivid orange-red caudal fin against a body of metallic green and black. The contrast between the flame tail and the jewel-like body makes this one of the most visually striking nano fish available.

Snakeskin Endler: A fine, intricate pattern of small markings across the body that creates a chain-link or snakeskin effect. Usually seen alongside metallic green base colour.

Regardless of strain, the colour intensity in endler males depends heavily on diet, lighting, stress level, and the presence of females. Males kept in all-male groups with good food and dark substrate will colour up dramatically as they compete for dominance through display rather than aggression.

Where Do Endler Guppies Come From? Natural Habitat Explained

The natural Poecilia wingei habitat is a handful of small freshwater bodies in the Cumana region of northeastern Venezuela, most famously Laguna de Patos — a warm, shallow, hard-water lagoon surrounded by dense vegetation. The species was first scientifically collected by Professor John Endler in 1975 during research on predation and colour evolution in wild poeciliids. It was formally described as a separate species from Poecilia reticulata in 2005 by Poeser, Kempkes, and Isbrucker.

In the wild, endlers occupy warm, shallow water with heavy algal growth, dense marginal plants, and fluctuating conditions. Laguna de Patos water is typically warm (25-30°C in nature), alkaline, and moderately to very hard — conditions quite different from the soft, acidic water preferred by many tropical fish. This natural hardiness is one reason endlers adapt so well to UK tap water, which tends to be moderately hard to hard in most regions.

The wild habitat is under threat from urban development and pollution. Some populations may already be extinct in the wild, making captive breeding programmes genuinely important for the long-term survival of the species. This is another reason the N-class system exists — it helps track which captive lines descend from verified wild stock.

For aquarium purposes, the key insight from the natural habitat is that endlers are adapted to hard, warm, well-lit water with dense plant growth. A planted nano tank with moderate flow, good lighting for algae and plant growth, and stable parameters closely mirrors what these fish evolved in. Unlike many tropical fish, they do not need soft water and actually prefer conditions that many UK aquarists already have straight from the tap.

Expert Tip

Mimicking the Laguna de Patos environment means warm water (24-26°C), moderate hardness, plenty of live plants, and areas of algal growth for natural grazing. A thin film of green algae on rocks and wood is not a problem in an endler tank — it is a food source.

How to Set Up the Perfect Tank for Endler Guppies

A well-planned endler guppy tank setup is straightforward because the species is genuinely undemanding. The key decisions are tank size, sex ratio, and planting density — the water chemistry side is easy because endlers tolerate a wide range.

Tank Size Requirements

The minimum endler guppy tank size is 30 litres, which comfortably houses a group of 8-10 fish. However, because endlers breed relentlessly, a slightly larger tank (40-60 litres) gives you more buffer for the inevitable fry. For an all-male colour display group where breeding is not a concern, 30 litres is genuinely sufficient. For a mixed-sex colony, 45-60 litres is more practical long-term.

The nano suitability of endlers is one of their strongest selling points. At 2-3.5 cm, they are among the few livebearers that genuinely work in small aquariums. Common guppies, platies, and mollies all need substantially more space. If you have a 30-litre planted desktop aquarium and want a livebearer, endlers are your best option.

Water Parameters

22-28°C Temperature

6.5-8.5 pH

5-25 dGH Hardness

30L+ Minimum Tank

The ideal endler guppy temperature is 24-26°C for everyday care. The full range is 22-28°C, but prolonged high temperatures accelerate metabolism and shorten lifespan, while prolonged low temperatures slow activity and breeding. The recommended endler guppy pH range is 6.5-8.5 — genuinely broad, and one of the widest tolerances of any popular tropical fish. Most UK tap water falls within this range without adjustment.

Endler guppy water hardness tolerance is equally broad: 5-25 dGH. They actively prefer moderately hard to hard water, which makes them one of the few colourful nano fish that actually thrive in London and south-east England tap water without needing RO dilution. This is a significant advantage over soft-water species like ember tetras or cardinal tetras.

Filtration

A sponge filter or a small hang-on-back filter works well. The filter intake must be covered with a fine sponge or pre-filter — endler fry are tiny (5-7 mm at birth) and will be sucked into unprotected intakes within hours. This is non-negotiable in any tank where breeding occurs. Flow should be gentle to moderate; endlers are not river fish and excessive current wastes their energy.

Substrate

Dark sand or fine gravel brings out male colours dramatically. On pale substrate, endlers look washed out. On black or dark brown sand, the metallic greens, neon oranges, and electric blues become almost luminous. Any inert substrate works — endlers are not substrate-sensitive, so choose based on aesthetics and plant needs.

Plants and Decor

Dense planting is strongly recommended, not just for aesthetics but for fry survival and female respite. Floating plants (salvinia, frogbit, water lettuce) provide essential cover for newborn fry and reduce light intensity to comfortable levels. Stem plants, mosses, and fine-leaved species create the mid-water structure that endlers naturally occupy. Java moss in particular is a near-perfect endler companion — fry hide in it, biofilm grows on it, and it requires almost no maintenance.

If you are keeping a mixed-sex group, plant density directly determines how many fry survive. In a bare tank, adults will eat nearly all fry. In a heavily planted tank with floating cover, a significant percentage of each brood survives — which quickly becomes a population management issue.

Lighting

Moderate lighting for 7-9 hours daily suits most endler setups. The fish are not light-sensitive, but their colours look best under moderate rather than intense illumination. Good plant growth lighting is compatible with endler keeping — the plants benefit, the fish benefit, and the visual effect in a well-lit planted nano tank is outstanding.

Pro Tip

If you want an all-male colour display tank with no breeding, 30 litres, 6-8 males, dense planting, and a sponge filter is all you need. Males display constantly to each other, intensifying their colours through competition. No aggression, no injuries — just constant colour display in a tiny footprint.

What Do Endler Guppies Eat? Complete Feeding Guide

The endler guppy diet is omnivorous and completely undemanding. These are grazing micro-predators in nature, picking at algae, biofilm, tiny invertebrates, and organic detritus throughout the day. In the aquarium, they accept virtually any food small enough to fit in their mouths.

Staple Foods

High-quality micro pellets or crushed tropical flakes should form the daily staple. Endlers have small mouths, so food particle size matters — standard-size pellets designed for larger fish are too big. Look for micro or nano-specific foods, or simply crush standard flakes between your fingers before feeding.

Supplemental Foods

Frozen baby brine shrimp, cyclops, daphnia, and micro bloodworms are excellent supplementary foods that enhance colour and condition. Feed these 2-3 times per week. Live foods — especially newly hatched brine shrimp — trigger intense feeding behaviour and are particularly useful for conditioning females before breeding or boosting fry growth.

Algae and Plant Matter

Endlers graze on soft green algae and biofilm naturally. A thin layer of green algae on glass, rocks, and wood provides a constant food source between feedings. Blanched courgette, spinach, or spirulina-based foods add plant matter to the diet. This grazing behaviour is one reason endlers work so well in established planted tanks — there is always something for them to pick at.

Feeding Frequency and Portion Control

Feed small amounts once or twice daily — only what the group consumes within 2 minutes. Endlers are enthusiastic eaters and will overeat if given the chance, which fouls water quality in nano tanks. In a well-planted, established aquarium with algae and biofilm, they need less prepared food than you might expect.

Overfeeding is the single biggest water-quality mistake in endler keeping. These are tiny fish in typically small tanks — the margin for error is narrow. Feed lightly, let them graze naturally, and test water weekly.

Feeding Warning

In a 30-litre nano tank with 8-10 endlers, a single pinch of micro pellets is a full meal. Overfeeding in small volumes causes ammonia spikes, cloudy water, and excess algae far faster than in larger aquariums. When in doubt, feed less.

How to Breed Endler Guppies: Complete Breeding Guide

Endler guppy breeding is not a question of how but rather a question of how to manage the consequences. If you keep males and females together in a warm, well-fed aquarium, breeding will happen — reliably, frequently, and prolifically. This is both the great joy and the great challenge of endler keeping.

Breeding Basics

Endlers are livebearers. Males fertilise females internally using a modified anal fin called a gonopodium. Females store sperm and can produce multiple broods from a single mating. Gestation lasts approximately 23-28 days, after which the female gives birth to 5-25 fully formed, free-swimming fry. Unlike egg-laying species, there is no spawning trigger to manage — breeding is continuous.

Males pursue females constantly. This is normal livebearer behaviour, but it means females need cover (dense plants, floating vegetation) where they can rest away from male attention. A sex ratio of 1 male to 2-3 females reduces harassment on individual females. In an all-male tank, this is obviously not a concern.

Fry Survival and Growth

Endler fry are born at 5-7 mm and are immediately capable of swimming, hiding, and feeding. In a planted tank with floating cover, many fry survive without any intervention. In a bare tank, adults will eat most of them within hours. If you want maximum fry survival for a breeding project, a dedicated breeding tank with dense java moss, a sponge filter, and no other fish produces the best results.

Fry accept crushed flake, powdered fry food, and newly hatched baby brine shrimp from day one. Growth is rapid — males begin showing colour at 3-4 weeks and reach adult size by 8-12 weeks.

Population Control: The Essential Conversation

This is the section every endler guide should lead with. A single female producing 15 fry every 25 days means 200+ fry per year from one fish. With multiple females, a 30-litre tank can go from a tasteful group of 8 to an overcrowded colony of 80 in under six months. Population control is not optional — it is the most important management decision in endler keeping.

All-male groups: The simplest solution. No females means no fry. Males display to each other, colour up beautifully, and cause no aggression problems. The only downside is losing the fascinating breeding behaviour.

Controlled predation: Keeping endlers in a community tank with mid-sized fish that eat fry (larger tetras, honey gouramis, dwarf cichlids) naturally limits population growth. Dense planting ensures some fry survive, creating a self-regulating colony.

Separation and rehoming: Regularly remove juveniles and rehome them through local aquarium clubs, online fish forums, or your local fish shop. This requires ongoing effort but maintains a breeding colony at manageable numbers.

Selective culling: Some breeders raise only the best-coloured males and rehome or cull the rest. This is standard practice in serious endler breeding programmes aimed at improving colour strains.

The worst approach is doing nothing. An overloaded nano tank crashes — ammonia rises, fish get sick, and what started as a beautiful display becomes a welfare problem. Plan your population strategy before you buy the fish.

Breeding Tip

If you want a breeding colony, start with 2 males and 6 females in a 45-60 litre planted tank. The population will grow steadily but manageably if you have a plan for excess fish. If you simply want the colour display, start with 6-8 males in a 30-litre tank and enjoy the easiest setup in the hobby.

What Fish Can Live With Endler Guppies? Compatibility Guide

Endlers are genuinely peaceful fish that occupy the upper to mid-water column. Their small size and non-aggressive nature mean compatibility is mostly about avoiding tank mates that are large enough to eat them or aggressive enough to harass them.

Ideal Tank Mates

The best endler guppy tank mates are other small, peaceful species that share similar water parameter preferences:

• Cherry shrimp and neocaridina: Endlers are one of the safer fish to keep with shrimp. Adult shrimp are completely ignored. Shrimplets may be eaten, but dense planting allows most to survive. This is one of the most popular endler community combinations in the UK hobby.
• Ember tetras: Similar size, peaceful temperament, and nano-tank suitability. The warm orange of embers against the metallic greens and blues of endlers creates a spectacular planted nano display.
• Pygmy corydoras: Tiny bottom-dwellers that occupy a completely different zone. Corydoras pygmaeus or C. habrosus are excellent companions in tanks of 45 litres or more.
• Otocinclus: Peaceful algae eaters that coexist perfectly with endlers. Both species benefit from a planted tank with natural biofilm growth.
• Celestial pearl danios: Another popular nano fish that occupies the lower to mid-water column. Compatible in temperament and water needs.
• Other livebearers (with caution): Platies and mollies are compatible in temperament but need larger tanks. Never keep endlers with common guppies — they will hybridise and produce offspring that are neither pure endler nor pure guppy.

Species to Avoid

Avoid any fish large enough to eat a 2-3 cm endler: most cichlids (except small dwarfs), larger barbs, predatory catfish, and aggressive species. Also avoid common guppies (Poecilia reticulata) if you want to maintain endler genetic purity — this cannot be emphasised enough.

Shrimp Compatibility in Detail

The endler guppy and shrimp question deserves special attention because it is one of the most common pairing requests. Adult cherry shrimp (neocaridina) of any colour morph are safe with endlers — the fish simply cannot fit an adult shrimp in their mouths. Baby shrimp (shrimplets) are small enough to be eaten, but in a well-planted tank with moss and floating cover, the majority of shrimplets avoid predation. Many keepers run successful endler-shrimp colonies where both species breed and maintain stable populations.

Amano shrimp are completely safe with endlers at any size. The shrimp are larger than the fish. Other small freshwater shrimp — crystal reds, caridina — are equally fine as adults, though their shrimplets face the same risk as neocaridina.

Compatibility Tip

The golden rule for endler tank mates: if it fits in their mouth, they will eat it. If it does not fit, they will ignore it. Adult endlers are 2-3.5 cm — most peaceful community fish, shrimp, and snails are completely safe.

Endler Guppy Appearance: Colours, Sexing, and What to Look For

Sexual dimorphism in endlers is dramatic and immediately obvious once you know what to look for.

Males: 2-2.5 cm. Brilliant metallic colours in bold patches — greens, oranges, blues, blacks — arranged in species-typical patterns that vary by strain. Short, compact fins. Slender, torpedo-shaped body. A pointed gonopodium (modified anal fin) is visible from around 4 weeks of age.

Females: 3-3.5 cm. Plain olive-grey to gold body with minimal colour. Rounded belly, especially when gravid. Fan-shaped anal fin (no gonopodium). A dark gravid spot near the anal fin becomes more prominent as pregnancy progresses. Females are often overlooked, but their robust, no-fuss nature is what makes the species so reliable as a breeding colony.

Colour intensity depends on diet, mood, lighting, and social context. Males display most vividly when competing for female attention or when displaying to rival males. Stressed, cold, or sick endlers lose colour rapidly — pale fish in a shop may colour up dramatically once settled in a well-maintained home aquarium. Conversely, endlers that look vivid in a shop but arrive pale after shipping usually recover within 48-72 hours if acclimated properly.

When buying endlers, look for males with intense colour, active display behaviour, and compact body shape. Avoid fish with clamped fins, faded patches, or unusually long finnage (which may indicate hybrid status). For females, look for plump, active fish with clear eyes and smooth body condition.

Common Health Problems in Endler Guppies and How to Prevent Them

Endlers are among the hardiest tropical fish available, but no fish is immune to poor husbandry. The most common health issues in endler keeping are almost always caused by overcrowding (from unmanaged breeding), overfeeding, or poor water quality — not by species-specific vulnerability.

Common Issues

Ammonia and nitrite poisoning: The number one killer in endler tanks, usually caused by overstocking from unchecked breeding or overfeeding in small volumes. Symptoms include lethargy, gasping at the surface, and clamped fins. Prevention: test water weekly, manage population, feed lightly.

White spot (ich): Tiny salt-like spots on the body and fins. Endlers are susceptible to ich when stressed — typically after transport, during cycling issues, or after sudden temperature drops. Raise temperature to 28°C gradually and treat with a copper-free ich medication safe for livebearers.

Fin rot: Ragged or eroding fin edges, usually following stress or poor water quality. More common in overcrowded tanks. Improve water quality with partial water changes and address the root cause — fin rot is a symptom, not a primary disease.

Internal parasites: Occasionally seen in newly acquired fish, especially imports. Symptoms include wasting despite feeding, white stringy faeces, and lethargy. Quarantine all new fish for 2 weeks minimum.

Curved spine (scoliosis): Sometimes appears in inbred lines. Fish with curved spines should not be bred from. This is a genetic issue, not an environmental one — another reason to source from reputable breeders who maintain genetic diversity.

Prevention

The best health strategy for endlers is the same as for any nano fish: stable water, regular maintenance, varied diet, controlled stocking density, and quarantine for all new arrivals. Weekly 20-25% water changes, consistent temperature, and a test kit used regularly will prevent the vast majority of problems. Endlers are genuinely robust fish when their basic needs are met — most keepers never encounter a disease problem.

Health Warning

In an overcrowded endler colony, diseases spread fast because the fish are in constant close contact and water quality degrades quickly. If your population has grown beyond what your tank and filter can handle, the priority is reducing numbers through rehoming — no amount of medication fixes overstocking.

Endler Guppy vs Similar Species: Which Nano Livebearer Is Right for You?

The nano and livebearer categories overlap at the endler, creating several useful comparisons with other popular species:

Endler guppy vs common guppy: Endlers are smaller (2-3.5 cm vs 5-6 cm), harder, more intensely coloured in metallic tones, and better suited to nano tanks. Common guppies offer more fin variety and colour morphs from selective breeding, work better in larger community setups, and are more widely available. Choose endlers for nano tanks and hardiness; choose guppies for flowing finnage in bigger aquariums. Never mix the two.

Endler guppy vs ember tetra: Both are excellent nano fish, but endlers are livebearers that breed constantly while embers are egg-scatterers that rarely breed in community tanks. Endlers tolerate hard water; embers prefer soft. Both are shrimp-safe. Endlers bring metallic colour variety; embers bring uniform warm orange. They can be kept together in 45-litre or larger tanks for a spectacular combination.

Endler guppy vs chili rasbora: Chili rasboras (Boraras brigittae) are similar in size and shrimp compatibility, but they need softer, more acidic water and are less tolerant of hard UK tap water. Endlers are significantly easier to keep in most UK water conditions. Chilis offer a subtle red-stripe beauty; endlers offer bold metallic fireworks.

Endler guppy vs platy: Platies (Xiphophorus maculatus) are larger livebearers (5-7 cm) that need bigger tanks (60 litres minimum). They share the hardiness and hard-water tolerance of endlers but lack the metallic colour intensity and nano suitability. Choose platies for mid-sized community tanks; choose endlers for nano setups.

Endler guppy vs least killifish: Heterandria formosa is the only livebearer smaller than an endler, but it is far less colourful and much harder to source in the UK. For colour, community appeal, and availability, endlers win convincingly.

Why Buy Endler Guppies from Tropical Fish Co?

When ordering endler guppies for sale UK, what you receive matters more than what you pay. We select bright, active fish with strong colour display and compact body shape — the characteristics that distinguish a healthy endler from a stressed or hybrid specimen. Each group is checked for feeding response, colour intensity, and body condition before dispatch.

We ship endlers in insulated packaging with heat packs during colder months. Despite their hardiness, these are small fish that chill quickly in transit, so thermal protection is essential for safe UK delivery. Fish are packed individually or in small groups to prevent fin damage during transport.

When you open the bag, the males should already be showing colour — metallic greens, vivid oranges, and electric blues visible even through the water. If they are pale on arrival, that is normal transit stress. Place the bag in a warm, planted tank for acclimation and expect full colour to return within 24-48 hours.

We also provide honest advice on sex ratios and population management. A customer who buys 3 males and 3 females without understanding endler breeding biology is a customer who will be overwhelmed within two months. We recommend all-male groups for beginners who want colour without complications, and mixed groups only for keepers with a population plan in place.

Order your Endler Guppies today for one of the most colourful, hardy, and entertaining nano fish available in the UK hobby.

Why Choose Tropical Fish Co for Endler Guppies

• Fish are selected for vivid colour display and compact endler body shape before dispatch
• Insulated packaging with seasonal heat protection for safe UK delivery
• Honest sex-ratio and population-management advice included with every order
• Guidance on N/P/K classification so you know what you are buying

You Might Also Like

Build a fuller nano community around your endler guppies with Cherry Shrimp — the most popular companion species and a perfect colour contrast in planted nano tanks. For bottom-dwelling interest, Pygmy Corydoras add movement at the substrate level without disturbing the endlers above. If you want a warm-toned shoaling contrast, Ember Tetras pair their glowing orange against the endlers' metallic greens and blues beautifully. For algae control in the same gentle community, Otocinclus are an ideal match — peaceful, small, and completely disinterested in your livebearers or shrimp. Browse our full livebearer collection for more nano-compatible species.

Answers to the most common questions

Endler Guppy Care

Endler Guppy care is considered easy. They need a tank of at least 30 litres, temperature of 22-28 °C, and pH in the 6.5-8.5 range. Dense planting and dark substrate bring out the best colour. They tolerate most UK tap water without modification. See the full care specs above.

Endler Livebearer

Endler livebearers (Poecilia wingei) are a separate species from common guppies (Poecilia reticulata). They are smaller, hardier, and more intensely coloured. The hobby uses the N/P/K classification system to track genetic purity — N-class (verified wild lineage), P-class (phenotypically pure), and K-class (known hybrids).

Endler Guppy Breeding

Endlers breed continuously and prolifically — females produce 5-25 fry every 23-28 days. Population control is the primary challenge. Keep all-male groups for colour display without breeding, or plan a rehoming strategy before starting a mixed-sex colony.

Endler Guppy Tank Mates

The best endler guppy tank mates are cherry shrimp, ember tetras, pygmy corydoras, otocinclus, and celestial pearl danios. Avoid large or aggressive fish, and never mix endlers with common guppies to prevent hybridisation.

Endler vs Guppy

Endlers are smaller (2-3.5 cm vs 5-6 cm), hardier, have compact fins rather than flowing tails, and display more intense metallic colours. Common guppies offer more fin variety and colour morphs from selective breeding. The two species will hybridise if kept together — maintain separate tanks to preserve endler genetics.

Endler Guppy For Sale

We currently stock Endler Guppies with UK delivery. Scroll down to the shop block for live prices and add-to-cart.