Rosy Barb (Pethia conchonius) - Live tropical fish for sale UK

Pethia conchonius

X Rosy Barb - UK

Beginner Friendly
Peaceful
£12.99In Stock

Bright, active Rosy Barbs that add colour and movement to community aquariums. Ideal for larger freshwater setups. Order now with UK delivery.

BarbsCommunity FishFishFreshwaterModerate CareSchooling FishTropical Fish

Care at a Glance

Scientific Name
Pethia conchonius
Adult Size
14 cm
Lifespan
5 years
Care Level
Easy
Temperament
Peaceful
Temperature
18–25°C
pH Range
6–8
Hardness
5–19 dGH
Minimum Tank
120L
Diet
Omnivore - flakes, pellets, vegetables, frozen foods

Premium Quality

Healthy, vibrant fish from trusted suppliers

Expert Care

Detailed care guides and support

Live Arrival Guarantee

Your fish arrives healthy or we'll replace it

Acclimated

Properly quarantined and ready for your tank

Quick Care Guide

Temperature
18–25°C
pH Range
6–8
Minimum Tank
120L
Adult Size
14 cm
Lifespan
5 years
Care Level
Easy
Temperament
Peaceful
Diet
Omnivore - flakes, pellets, vegetables, frozen foods
Water Hardness
5–19 dGH
Tank Region
Middle

Water Parameters

Maintain these water conditions for optimal health and vibrant colors

Temperature
18–25°C
18°CIdeal Range25°C
pH Level
6–8
6Ideal Range8
Water Hardness
5–19 dGH
5 dGHIdeal Range19 dGH

Why Choose This Fish?

Bright, active Rosy Barbs that add colour and movement to community aquariums. Ideal for larger freshwater setups. Order now with UK delivery.

Rosy Barbs are one of the best choices for fishkeepers who want movement, colour, and hardiness in the same aquarium. Pethia conchonius is a subtropical cyprinid from southern Asia that has earned a strong reputation as one of the most reliable freshwater tropical fish UK hobbyists can keep. They are widely recommended as rosy barbs for beginners because they adapt well, show bold feeding behaviour, and tolerate a broader rosy barbs water temperature range than many delicate tropical species. Adult fish reach a notable rosy barb size of around 10-14 cm, so they are larger and more substantial than many people expect when asking about rosy barb full size. With a typical rosy barb lifespan of up to 5 years, they offer long-term value in a lively community aquarium.

These fish are especially popular as rosy barbs schooling fish, and a good group creates a constantly active display in the midwater zone. Their warm metallic pink, copper, and red tones become even stronger in mature males, making them truly colourful rosy barbs for aquarium displays. Many keepers choose them as community barb fish UK favourites because their temperament is generally steady when kept in the right numbers and in a spacious setup. See our detailed photos showing body shape, fin colour, and the difference between rosy barbs male and female specimens. If you want rosy barbs active aquarium fish with personality, visible social behaviour, and straightforward care, this group is an excellent addition to a well-planned tank.

🔹 Quick Facts

  • Scientific Name: Pethia conchonius
  • Care Level: Easy to moderate
  • Min Tank Size: 120 litres (about 26 gallons)
  • Temperature: 18-25°C (64-77°F)
  • pH Range: 6.0-8.0
  • Lifespan: Up to 5 years
  • Temperament: Peaceful, active, social
  • Diet: Omnivore

Classification

  • Order: Cypriniformes
  • Family: Cyprinidae
  • Genus: Pethia

The rosy barb belongs to the carp and minnow family, a huge group that also includes many familiar aquarium fish once sold under older hobby names such as barbus and puntius. In the trade, Rosy Barbs have remained popular for decades because they are hardy, attractive, and more forgiving than many small tropical species. They also sit alongside other well-known barbs such as the Ruby Barb Puntigrus Tetrazona Tropical and X Odessa Barbs - Pethia Padamya, giving barb enthusiasts several colourful options for larger community tanks.

Where Do Rosy Barbs Come From? Natural Habitat Explained

The natural rosy barbs habitat stretches across parts of southern Asia, including India, Nepal, and Pakistan, with records extending more broadly across the region. In the wild, these fish are found in lakes, ponds, slower river margins, and even faster-flowing waters where oxygen levels remain good. That range helps explain why they are so adaptable in captivity. When aquarists compare them with species from a narrower niche, such as fish associated with a specific cherry barb habitat or tiger barb habitat, Rosy Barbs often prove more forgiving.

Wild fish feed on worms, insects, small crustaceans, and plant matter. That natural omnivory is the basis of a balanced rosy barbs diet in the aquarium. In nature, seasonal changes in temperature and food availability also influence colour and spawning behaviour. Males intensify in colour during courtship, while females become fuller-bodied with eggs. This is why hobbyists asking whether a rosy barb pregnant fish is possible are usually seeing an egg-laden female rather than livebearing behaviour.

Water in the wild is typically neutral to slightly acidic or slightly alkaline, which fits the broad rosy barbs pH requirements of 6.0 to 8.0. Their native climate is subtropical rather than truly tropical, so they can thrive at cooler temperatures than many common aquarium fish. That is also why some people ask whether rosy barbs cold water fish are suitable. The best answer is that they are subtropical fish: cooler-tolerant than many tropical species, but still best kept in a stable heated aquarium in most UK homes.

When comparing habitats, you may also see searches for cherry barb biotope, cherry barb natural habitat, cherry barb natural environment, cherry barb in wild, cherry barb native, cherry barb native range, cherry barb origin, tiger barb in the wild, and tiger barb native origin. These related searches matter because many barb keepers want to build a themed Asian aquarium. Rosy Barbs fit that idea well, especially in a spacious planted layout with open swimming lanes.

💡 Expert Tip

Mimicking the natural habitat improves colour, confidence, and feeding response. Use open swimming space at the front and centre, darker substrate below, and plants around the edges to create shelter without turning the tank into a maze.

How to Set Up the Perfect Tank for Rosy Barbs

A proper rosy barbs tank setup starts with understanding that these are active, larger-bodied barbs, not tiny nano fish. The recommended rosy barbs minimum tank size is 120 litres, and that is also the practical rosy barbs tank size for a starter group. A longer tank is more important than a tall one because they spend much of their time cruising the middle levels. If you are planning rosy barbs in 100 litre tank conditions, it will usually feel cramped once the fish approach adult size, especially in a group.

Tank Size Requirements

The ideal rosy barb tank size for a group of 6 or more is at least 120 litres, with extra length strongly preferred. Larger tanks help spread out energy and reduce occasional chasing. Because rosy barbs group size matters, understocking the species socially can create more tension than keeping a proper school. A 120-150 litre aquarium gives them room to move naturally and makes them one of the best rosy barbs for community tank centrepieces.

Water Parameters

The safest rosy barbs temperature range is 18-25°C, with 20-23°C often ideal for long-term maintenance. If someone asks about rosy barb temperature or the broader rosy barbs water temperature range, think stable rather than extreme. Their rosy barbs pH requirements are broad at 6.0-8.0, and moderate hardness is well tolerated. These fish are adaptable, but sudden swings still cause stress.

120L+
Minimum tank size
18-25°C
Water temperature
6.0-8.0
pH range
5-19 dGH
Hardness

Filtration

Rosy Barbs appreciate clean, oxygen-rich water and a moderate current. A quality external or internal filter that turns over the tank volume several times per hour works well. Because they are enthusiastic feeders, filtration should be sized for an active community, not just the bare minimum. Keep flow broad rather than harsh; they enjoy movement, but not a constant blast.

Substrate

Darker gravel or sand helps bring out the metallic pink and red tones in mature fish. This is one of the simplest ways to improve display colour. A dark base also makes the fish feel more secure and complements green plants beautifully.

Plants & Decor

Rosy barbs for planted aquarium layouts can work very well, especially with hardy species rooted around the sides and back. Use open swimming space in the middle with clumps of plants at the edges. Fine-leaved plants are useful if you plan on rosy barbs breeding, as eggs are scattered among leaves. If you enjoy barb varieties, you can also compare their look with X Long Fin Rosy Barbs -, X Rosy Barb, X Gold Rosy Barbs - Pethia, X Orange Rosy Barbs - Pethia, and X Diamond Rosy Barbs - Pethia.

Lighting Requirements

Their rosy barbs lighting requirements are moderate. Standard planted-tank lighting for 7-9 hours daily is usually enough. Very bright light with no cover can make them skittish, while balanced lighting over dark substrate often shows their best colour. If you are comparing setups with other barbs, searches like tiger barb tank setup, tiger barb tank requirements, tiger barb tank size, tiger barb minimum tank size, tiger barb ideal temperature, tiger barb requirements, cherry barb tank requirements, cherry barb tank size, cherry barb minimum tank size, cherry barb temperature, cherry barb temperature range, cherry barb water temperature, and cherry barb ideal temperature often appear. Rosy Barbs need more swimming room than Cherry Barbs and usually cooler water than many tropical community species.

Quick Setup Checklist

  • Choose a tank of at least 120 litres with good length
  • Keep a group of 6 or more to spread social behaviour
  • Maintain 18-25°C and pH 6.0-8.0
  • Use dark substrate to improve colour contrast
  • Add edge planting and leave open swimming space
  • Use mature filtration with steady oxygenation

💡 Pro Tip

Always cycle the tank for 4-6 weeks before adding Rosy Barbs. In newly set up aquariums, their constant activity can hide early stress until ammonia or nitrite damage is already happening.

What Do Rosy Barbs Eat? Complete Feeding Guide

A balanced rosy barbs diet is easy to provide because these fish are true omnivores. In nature they eat insect larvae, worms, crustaceans, and plant material, and in aquariums they accept flakes, micro pellets, frozen foods, and blanched greens. A practical rosy barbs feeding guide should focus on variety, not just one staple food. If you have ever wondered how often should you feed rosy barbs, the best routine is 1-2 small meals daily, only what they can finish in a couple of minutes.

Staple Foods

Use a quality tropical flake or small sinking pellet as the main daily food. Because Rosy Barbs are energetic, they do well on a protein-supported staple but should not be fed rich treats at every meal. Their appetite is strong, so portion control matters.

Supplemental Foods

Supplement with frozen daphnia, bloodworm, mosquito larvae, and brine shrimp. Vegetable matter also helps. Blanched spinach, shelled peas, and spirulina-based foods support digestion and reduce the chance of rosy barb eating plants out of boredom. People often ask do rosy barbs eat plants; the honest answer is yes, they may nibble soft growth, especially if underfed or kept in sparse tanks.

Treats & Comparisons

Many related searches compare feeding across barb species, including cherry barb diet, tiger barb diet, what do cherry barbs eat, what tiger barb eat, what to feed cherry barbs, what to feed tiger barbs, and cherry barb fish food. Rosy Barbs eat similarly, but because they grow larger, they can take slightly bigger foods than Cherry Barbs. If you keep mixed barb communities, feed enough across the whole tank so faster fish do not dominate every meal.

Time Food Amount
Morning Quality tropical flake or small pellet What the group eats in 1-2 minutes
Evening Frozen food or vegetable-based supplement Small portion, no leftovers

They can also be conditioned for breeding with live or frozen foods. This is especially useful before attempting rosy barbs breeding. Keepers asking whether cherry barb eat plants, do cherry barbs eat plants, cherry barb eat shrimp, do cherry barbs eat shrimp, cherry barb eat snails, do cherry barbs eat snails, or do tiger barbs eat other fish are usually trying to judge community risk. Rosy Barbs are generally safer than Tiger Barbs, but they are still opportunists and will sample tiny foods if available.

⚠️ Avoid Overfeeding

Overfeeding causes ammonia spikes, cloudy water, and obesity. Rosy Barbs rush to the glass and act hungry even when they have had enough, so do not let begging behaviour set the feeding schedule.

X Red Rosy Barbs - Pethia — A useful comparison if you want to build a colourful barb display and observe how diet affects red intensity across similar forms.

What Do Rosy Barbs Look Like? Colors, Patterns & Varieties

If you are wondering what are cherry barb fish or what are cherry barbs and how Rosy Barbs differ, the first thing you notice is body depth and scale. Rosy Barbs are larger, deeper-bodied, and more reflective. Adult males can show a glowing pink to red body with darker markings around the fins, especially during courtship. Females are usually fuller, more silver-gold to bronze, and less intensely coloured.

The typical rosy barb size in aquariums is around 10-12 cm, though some specimens can approach 14 cm with excellent care. That makes them much more substantial than Cherry Barbs and closer to the size range hobbyists imagine when comparing a gold barb or ruby barb display fish. Their body shape is streamlined but muscular, built for constant movement.

One of the most common questions is how to tell rosy barbs male and female. Males are slimmer and brighter, especially when mature or in breeding condition. Females are rounder through the belly and usually lack the same fin darkness. This difference often leads people to search for terms like how to tell if cherry barb is pregnant, how to tell if cherry barbs are mating, or cherry barb pregnant symptoms. With Rosy Barbs, a swollen female is carrying eggs, not fry, because they are egg scatterers.

Our photos show the sheen, body depth, and subtle colour differences that are hard to judge in generic stock images. If you enjoy barb variety, compare this group with X Gold Rosy Barbs - Pethia for a lighter look or Ruby Barb Puntigrus Tetrazona Tropical for a bolder striped contrast. Searches such as cherry barb care, cherry barb care guide, cherry barb guide, and cherry barbs care guide often come from hobbyists choosing between barb species; Rosy Barbs are usually the better choice when you want a larger, more visible shoaling fish.

What Fish Can Live With Rosy Barbs? Compatibility Guide

When people ask what fish can live with rosy barbs, the key point is activity level. Rosy Barbs are generally rosy barbs peaceful community fish when kept in a proper group and given enough room, but they are also energetic and can outcompete shy fish at feeding time. They work best with similarly active, medium-sized community species that tolerate cooler subtropical conditions.

Ideal Tank Mates

Good rosy barb tank mates include other robust barbs, danios, larger rasboras, and peaceful bottom dwellers. Within the barb family, they can work with X Odessa Barbs - Pethia Padamya in larger aquariums, and experienced keepers sometimes enjoy mixed displays with Ruby Barb Puntigrus Tetrazona Tropical if the tank is spacious and the group sizes are correct. For a same-species display, X Long Fin Rosy Barbs - and X Rosy Barb make natural comparison options.

Because rosy barbs schooling fish behaviour is strongest in groups, they are often more settled with their own kind than in sparse mixed setups. That is why they are considered a strong choice as active schooling fish UK community fish. They can also work as rosy barbs with other barbs in larger tanks, provided the species chosen are not notorious fin nippers.

Species to Avoid

Long-finned, slow fish are risky. Fancy guppies, some gouramis, and delicate livebearers may be stressed by their speed. Searches like rosy barbs and guppies and rosy barbs and platys come up often. Platys can work better than guppies if the tank is large, but guppies are a poor match because of fin shape and temperature differences.

Another common question is can rosy barbs live with goldfish or rosy barbs and goldfish. While both tolerate cooler water, this pairing is usually not ideal. Goldfish produce heavy waste, have very different feeding dynamics, and fancy varieties are too slow. A single search for rosy barb and goldfish might suggest compatibility, but in practice most mixed setups are compromised.

People comparing barbs also ask what fish can cherry barbs live with, what fish can tiger barbs live with, what can tiger barbs live with, are cherry barbs community fish, are cherry barbs good community fish, are cherry barbs schooling fish, are tiger barb schooling fish, are tiger barbs community fish, are tiger barbs good community fish, are tiger barbs compatible with tetras, are tiger barbs aggressive to other fish, and why are tiger barbs so aggressive. Compared with Tiger Barbs, Rosy Barbs are usually calmer and easier to place in a mixed aquarium.

Species Compatible? Notes
Odessa Barbs ✅ Yes Works in larger tanks with strong swimming space and matched group sizes.
Long Fin Rosy Barbs ⚠️ Caution Possible, but watch for fin interest from active tank mates.
Fancy Guppies ❌ Avoid Long fins and different energy levels make stress and nipping more likely.

Invertebrates

Adult shrimp may survive in dense cover, but tiny shrimp and shrimplets are at risk. Snails are generally safer, though eggs may be pecked at. If you are researching barbs because of terms like why is my cherry barb aggressive or tiger barb breeding in community tank, remember that most barb problems come from crowding, poor group size, or unsuitable tank mates rather than from the species being inherently bad community fish.

💡 Compatibility Tip

Always quarantine new arrivals for 2-4 weeks before adding them to a community tank. This protects established Rosy Barbs from parasites and gives you time to observe whether the new fish are too shy, too aggressive, or carrying disease.

How to Breed Rosy Barbs: Complete Breeding Guide

Rosy barbs breeding is considered easier than many hobbyists expect. These fish are egg scatterers, and healthy adults often condition readily on good food and stable water. If you have bred other barbs before, you may have seen related searches such as cherry barb fish breeding, cherry barb breeding guide, cherry barb how to breed, how to breed cherry barbs, when do cherry barbs breed, when do cherry barbs lay eggs, cherry barb breeding behaviour, tiger barb breeding, tiger barb breeding behavior, tiger barb breeding time, tiger barb how to breed, and when do tiger barbs breed. Rosy Barbs follow a similar egg-scattering pattern but need more room.

Breeding Setup

Use a separate breeding tank of around 45-60 litres with fine-leaved plants or a spawning mop. Keep water clean, slightly on the cooler-neutral side of their range, then raise temperature gently within the safe band to encourage spawning. If you are comparing with cherry barb breeding conditions or cherry barb breeding temperature, Rosy Barbs are similarly responsive to conditioning foods and stable water rather than extreme parameter changes.

Spawning Behaviour

Males intensify in colour and begin circling and chasing females. A female ready to spawn becomes noticeably rounder. This is the answer to many searches for rosy barb pregnant: she is full of eggs, not pregnant in the livebearer sense. During spawning, eggs are scattered among plants, usually in the morning, and adults may eat them if left in the tank.

Egg Care & Hatching

Remove the parents after spawning. Eggs usually hatch in roughly 24-36 hours depending on temperature, and fry become free-swimming a few days later. Start with infusoria or powdered fry food, then move to freshly hatched brine shrimp as they grow.

Common Challenges

The main problems are adults eating eggs, fungus on infertile eggs, and overfeeding fry. If you are looking up how to tell if cherry barb has eggs or tiger barb how to tell male and female, the same rule applies here: females are fuller, males are brighter and more active in courtship. Keep the breeding tank clean and lightly aerated.

Advanced Breeding Tip

Condition males and females separately for 7-10 days on frozen foods before pairing them. When reunited in a planted breeding tank, the contrast in colour and courtship intensity is often much stronger, and egg yield is usually better.

Rosy Barbs vs Similar Species: Which Should You Choose?

Barb keepers often compare Rosy Barbs with Cherry Barbs, Tiger Barbs, and other colourful cyprinids before buying. This matters because size, temperament, and water temperature vary more than many beginners realise. If you want a visible, active, medium-sized shoal, Rosy Barbs often sit in the sweet spot between the gentler but smaller Cherry Barb and the more assertive Tiger Barb.

Feature Rosy Barbs Cherry Barbs
Max Size 10-14 cm 4-5 cm
Care Level Easy to moderate Easy
Temperature 18-25°C 23-27°C typical
Price £12.58 Varies by stock
Best For Active larger community tanks Smaller peaceful planted tanks
Feature Rosy Barbs Tiger Barbs
Temperament Generally peaceful More nippy and assertive
Schooling Style Loose active shoal Tight, competitive group
Community Suitability Good with robust fish Needs careful tank mate choice
Best For Mixed subtropical community Species-focused barb tanks
Look Rosy metallic body Bold striped contrast

Choose Rosy Barbs if you want a larger shoaling fish with strong colour, visible behaviour, and less risk than Tiger Barbs. Choose Cherry Barbs if space is limited and you prefer a calmer planted setup. If you like comparing forms, browse X Rosy Barb, X Gold Rosy Barbs - Pethia, and X Odessa Barbs - Pethia Padamya. Hobby searches for gold barb, ruby barb, ticto barb, and p. padamya usually come from aquarists deciding which barb best suits their tank size and temperament goals.

Common Health Problems in Rosy Barbs & How to Prevent Them

Good rosy barbs health starts with stable water, proper group size, and a varied diet. Healthy fish are alert, swim in the open, feed eagerly, and show clear eyes with intact fins. Mature males display stronger colour, especially during social interaction and courtship. If fish clamp fins, hide constantly, gasp, or stop eating, investigate water quality first.

Common Diseases & Symptoms

The most common rosy barbs diseases are the same ones seen in many community fish: ich, bacterial fin damage, and stress-related fungal problems. Poor water quality after overfeeding is a frequent trigger. Because hobbyists often compare across species, you may also see searches for cherry barb diseases, cherry barb ich, and cherry barb illness. The prevention rules are the same: quarantine, clean water, and low stress.

Treatment & Prevention

Start with testing ammonia, nitrite, and nitrate. Perform water changes, increase aeration, and move sick fish to a treatment tank if needed. Quarantine all new arrivals for 2-4 weeks. This is especially important in mixed barb communities where active fish can mask early symptoms.

Some buyers also ask unusual comparison questions such as which tiger barb fish, are tiger barbs cichlids, can tiger barbs live with cichlids, or can tiger barbs live with african cichlids. Rosy Barbs are not cichlids and should not be treated like them; they need community-style management, not aggressive hardwater stocking plans.

⚠️ Medication Warning

Never medicate blindly. Treating for the wrong problem can weaken fish further, and copper-based medications are dangerous in tanks containing shrimp or sensitive invertebrates.

Quarantine Protocol

  • Use a separate bare-bottom tank for 2-4 weeks
  • Observe appetite, breathing, fins, and skin daily
  • Test water regularly and keep it pristine
  • Only move fish to the main tank when fully active and symptom-free

What Is Rosy Barb Behaviour Like in the Aquarium?

Rosy barbs behaviour is one of the main reasons they remain so popular. They are active throughout the day, spend most of their time in the middle water, and respond quickly to feeding and movement outside the tank. In a proper group they are confident and visible, which makes them excellent display fish for living rooms and offices.

They are social rather than solitary, so rosy barbs schooling fish behaviour is best seen in groups of 6 or more. Males spar lightly, display to one another, and intensify in colour when females are present. This social energy is normal and usually harmless in a tank with enough space. If kept in too small a group, they may become more restless and pester tank mates.

Because they are among the most reliable rosy barbs active aquarium fish, they suit aquarists who enjoy a lively tank rather than a quiet one. They are also often chosen as rosy barbs peaceful community fish because their movement adds life without the constant fin-nipping associated with some other barbs. Open swimming lanes, regular feeding, and a stable social group encourage the best natural behaviour.

Why Buy from Tropical Fish Co?

When you buy rosy barbs UK hobbyists want fish that arrive active, correctly packed, and ready to settle. Our Rosy Barbs are selected for body condition, steady swimming, and clean finnage rather than just colour on the day of sale. That matters with this species because juveniles can look modest at first, then develop into striking adults under proper care. If you are comparing rosy barbs for sale UK listings, look for realistic size expectations, clear care guidance, and honest advice on group numbers.

Before dispatch, fish are monitored for feeding response and general condition. They are packed in insulated boxes suitable for UK transit, with seasonally appropriate protection such as heat packs in colder weather. This helps support safe rosy barbs delivery UK and reduces temperature shock on arrival. For buyers searching live rosy barbs for sale UK, rosy barbs buy online UK, order rosy barbs online UK, or a reliable rosy barbs shop UK, careful packing is just as important as the fish themselves.

We also know that buyers compare species and price before choosing. Searches for cherry barb fish for sale, tiger barb fish for sale, tiger barb fish price, rosy barb price, rosy barbs price UK, and even cheap rosy barbs UK often lead to stock that is too small, poorly sexed, or not settled before sale. A healthy, properly conditioned group gives far better long-term value than a cheaper batch that struggles to adapt. Order your Rosy Barbs today with confidence if you want a hardy, visible, and rewarding barb for a spacious community aquarium.

Why Choose Tropical Fish Co for Rosy Barbs

  • Groups selected for active feeding response and balanced body condition
  • Packed for UK transit in insulated boxes with seasonal temperature protection
  • Supported by species-specific care guidance on tank size, group size, and compatibility

You Might Also Like

If you enjoy Rosy Barbs, consider building a varied barb display with X Long Fin Rosy Barbs - for flowing finnage or X Gold Rosy Barbs - Pethia for a lighter colour form. For contrast, Ruby Barb Puntigrus Tetrazona Tropical adds bold patterning, while X Odessa Barbs - Pethia Padamya offers a striking red lateral band. If you prefer a classic same-species option, X Rosy Barb is a natural companion listing. You can also browse broader X Red Rosy Barbs - Pethia and X Orange Rosy Barbs - Pethia style options to compare colours and create a more dynamic subtropical community.