Doctor Fish (Garra rufa)

Garra rufa, commonly called the Doctor Fish or Red Garra, is an active freshwater grazer from Western Asia. It is best known in aquariums for moving over smooth stones, wood and glass in search of aufwuchs: the living film of algae, microbes and tiny organisms that develops on submerged surfaces. This is not a small disposable "clean-up fish". A mature specimen can reach about 14-15 cm, needs a long, highly oxygenated aquarium and should receive a complete diet even when natural grazing is available.

This species suits an aquarist who enjoys river-style displays, energetic bottom-dwelling fish and careful water management. It is generally peaceful towards unrelated tank mates, but individuals can be territorial with their own kind or similarly shaped bottom grazers. A properly sized group, broken sight lines and several feeding areas help distribute that social pressure. Garra rufa also climbs wet glass and can find surprisingly small openings, so a tight lid is essential from the first day.

Our guide treats Doctor Fish as ornamental aquarium livestock only. It explains what the species eats, how much room a group needs, which water conditions are practical in a UK home, how to plan compatible tank mates and why biofilm never replaces deliberate feeding. The available size options are shown in the selector on this page; stock and price there are the live source of truth.

Is Garra rufa the right fish for your aquarium?

Choose this species for its behaviour rather than as a shortcut to a clean tank. A settled group is conspicuous and busy. The fish use their modified lower mouth and adhesive disc to hold position, graze hard surfaces and move through current. They investigate new rockwork quickly and may gather wherever food enters the tank. Those habits make them engaging to watch, but also mean a short or sparsely furnished aquarium is a poor fit.

The best keeper already understands the nitrogen cycle, owns liquid water tests and is comfortable balancing circulation with resting areas. Doctor Fish produce ordinary fish waste and cannot repair an overstocked, immature or poorly maintained system. They may consume some soft growth and biofilm, but they will not reliably remove every form of algae. Persistent algae should prompt a review of light, nutrients, maintenance and plant health rather than reduced feeding.

Avoid this species if the available tank is under 120 cm long, if it has an open top, or if its residents require still water. It is also a weak choice for a brand-new aquarium. The filter needs to be biologically mature, and the stones and wood are more valuable once a natural grazing film has developed. The fish can survive without visible algae when fed correctly, but a mature environment offers more natural foraging and greater behavioural choice.

Identity, distribution and natural habitat

Garra rufa is a cyprinid in the subfamily Labeoninae. Its accepted scientific name is more useful than the nickname "Doctor Fish", which can also be confused with unrelated marine fish. The species occurs in the Jordan, Orontes and Tigris-Euphrates river systems, as well as coastal drainages of southern Turkey and northern Syria. Published records also extend through parts of the wider Middle Eastern range. It is a freshwater, bottom-associated fish rather than a loach, pleco or catfish.

Wild populations occupy more than one habitat type. Records include rivers, streams, ponds and lakes, often with stones or vegetation used for cover. Field studies describe it as rheophilic, meaning associated with flowing water, and record many populations over coarse substrates. This variety explains its physiological tolerance, but tolerance is not the same as an ideal captive target. A home aquarium should reproduce the most consistently useful features: clean water, oxygen, current, secure shelter and grazing surfaces.

The ventral mouth carries an adhesive disc that helps the fish remain on rock in moving water. Two pairs of small barbels assist close-range investigation. Wild colour is variable, commonly brownish olive to dark green with mottling along the flanks, a paler belly and darker markings near the tail base. Colour can change with lighting, background, social state and stress, so a temporarily pale new arrival is not by itself a diagnosis.

FishBase lists a maximum of 14.1 cm for the species, while a Canadian government biological synopsis reviews populations in which commonly reported maxima are around 13-14.5 cm and notes an exceptional larger record. For aquarium planning, 14-15 cm is the responsible working size. A juvenile sold at 1 cm or 3-4 cm still needs the adult footprint, filtration and social plan.

Tank size, footprint and group planning

For a permanent display, start with an aquarium at least 120 cm long and around 240 litres for five Doctor Fish. Length and floor area matter more than a tall column of water because these fish repeatedly cross the lower levels and use horizontal hard surfaces. A wider front-to-back dimension makes it easier to build separate grazing patches, calm pockets and visual barriers without blocking swimming room.

That recommendation is a practical baseline, not a licence to fill every litre. Adult group size, tank mates, decor displacement and filter capacity all affect the final stocking level. Six or more adults, or a mixed community with other robust stream fish, benefit from a larger aquarium. If the tank is heavily decorated, calculate its real water volume and usable floor space rather than relying only on the number printed on the box.

Keep five or more when the aquarium can support them. Doctor Fish are not tight-schooling fish, yet wild observations describe loose aggregations and aquarium groups distribute attention better than pairs or trios. Conspecific chasing can still occur, particularly around food or a favoured stone. A larger group only works when it is paired with enough room, broken sight lines and multiple resources; adding fish to a cramped tank does not solve aggression.

How to arrange the aquascape

Build from smooth sand or fine rounded gravel, then add water-worn cobbles, broader flat stones and pieces of aquarium-safe wood. Leave open paths between structures. Position some surfaces in the main current and others at its edge so each fish can choose how hard it works to hold position. Avoid sharp stone, rough artificial ornaments and unstable stacks that could trap a fish during a chase.

Create at least as many useful grazing zones as there are fish. They do not have to be identical. One may be a broad stone under bright light, another a shaded wood surface, and another a low boulder beside the spray-bar flow. Taller stones, wood or robust plants can interrupt direct lines of sight. Attach Anubias or Java fern to hardscape rather than relying on delicate rooted planting in the busiest lanes.

A moderate lighting period can encourage useful natural growth, but do not deliberately drive the aquarium into unstable algae blooms. Begin with a consistent schedule of about eight hours and adjust in response to plant growth and water chemistry. Leave some biofilm in the display when cleaning; polish the viewing pane if desired, but rotate the cleaning of rocks and wood so every grazing surface is not stripped on the same day.

Escape prevention

A close-fitting lid is not optional. Garra can climb damp glass above the water line, especially after transport, during acclimation or when startled. Cover the openings around external-filter hoses, heater cables and airline. Keep the normal water level far enough below the lid that a fish cannot reach a gap easily. Check covers after every maintenance session, because a cable moved by a few millimetres can reopen an escape route.

Water parameters, flow and oxygen

A practical long-term aquarium target is 16-24°C, pH 6.0-7.5 and roughly 5-20 dGH. The Petra supplier record gives the broader species envelope as 15-28°C, pH 6.0-7.5 and 5-20 dGH. FishBase also reports 15-28°C. Those outer figures describe tolerance across a wide natural range; they should not be used as permission for abrupt changes or chronically marginal conditions.

Within the practical range, choose a stable temperature that also suits every tank mate. A centrally heated UK room may still fluctuate, so use a reliable thermometer and an appropriately guarded heater when needed. Warmer water holds less oxygen. If temperature rises during summer, increase surface movement, check the filter intake and avoid adding extra food merely because the fish appear more active.

Flow should be obvious but not uniform from end to end. An external canister filter, strong internal filter or carefully protected circulation pump can create a river-like lane. Aim the outlet so it disturbs the surface and carries oxygenated water across the tank. Observe the fish: they should be able to graze in the current and also rest behind wood or stone without being forced to swim continuously.

Test ammonia, nitrite, nitrate, pH and temperature. In a mature aquarium, ammonia and nitrite should remain at zero. Use nitrate trends to set a maintenance rhythm rather than waiting for visible dirt. If fish breathe rapidly, crowd the outlet or become unusually inactive, test immediately and inspect flow, temperature and oxygenation. A clear-looking aquarium can still have a water-quality problem.

What does Garra rufa eat?

Doctor Fish are omnivorous grazers with a strong plant and periphyton component. Gut-content work reviewed in the government biological synopsis found benthic plant material, including several groups of algae, as well as rotifers and protozoa. In an aquarium, the closest useful concept is a varied aufwuchs diet: plant-rich prepared food, small animal protein and continual opportunity to browse mature surfaces.

Use a quality sinking wafer or granule as the planned staple. Our green algae wafers provide a convenient plant-rich option, while spirulina sinking granules can add variety. Supplement with small frozen foods such as frozen daphnia, plus occasional blanched courgette, spinach or shelled pea. Frozen and fresh foods should be clean, appropriately sized and used in portions the group can finish.

Feed across several points instead of dropping one large wafer into a contested corner. This lets subordinate fish eat and makes it easier to observe every individual. Juveniles need smaller particles and more frequent access than adults, but every feeding should remain controlled. Remove substantial leftovers before they decay. The grazing fish may return to a wafer repeatedly, so judge the portion over the full feeding period rather than expecting it to vanish in seconds.

Visible algae is not a complete diet. Many algae types are unpalatable or inaccessible, and a very clean tank can contain little useful aufwuchs. Conversely, deliberately withholding food so fish graze more is poor husbandry. A rounded abdomen, steady activity and regular interest in food are more useful indicators than the amount of algae left on the glass.

Temperament and social behaviour

Garra rufa is active, inquisitive and usually peaceful towards fish that do not compete for the same surfaces. Its own social behaviour is more complicated. Group members may chase one another, defend a feeding patch or displace a fish from a favoured stone. That does not make the species generally aggressive, but it does make "peaceful" an incomplete description.

Keep at least five in a suitable adult aquarium so attention is not concentrated continually on one subordinate fish. Watch for a repeated pattern rather than a single short chase. Normal social negotiation ends quickly and every fish returns to feeding. Intervention is needed when one individual is excluded from food, pinned in a corner, losing weight, showing torn fins or spending most of the day hiding.

Restructure the hardscape before adding new group members. Moving rocks and wood weakens established territories and gives every fish new routes. Add several feeding stations and dim the lights for the first hours. Do not solve persistent conflict by placing more fish into an already full tank; increase usable space or separate the aggressor when husbandry changes fail.

The species is boisterous at meals and can climb or jump when startled. Avoid tapping the glass, sudden room lighting and vigorous net chasing. A clear specimen container often transfers a small fish with less risk than a net in a rock-filled aquarium. Keep all lids closed during feeding and maintenance.

Tank mates and compatibility

Compatibility begins with water movement, temperature and adult size. Suitable companions are active, streamlined fish that appreciate clean, oxygen-rich water and can feed confidently without bullying the Garra. Peaceable river loaches, robust hillstream species and selected danios or devarios may work when their individual care ranges overlap. Species names alone are not enough; compare the exact temperature, flow, size and social requirements before purchase.

For upper-water movement, White Cloud Mountain Minnows can share part of the temperature range in a carefully planned display. A Sewellia lineolata hillstream loach is another flow-loving fish, but both species use biofilm-rich surfaces, so a large mature aquarium and deliberate feeding are essential. These links are examples for research, not automatic stocking instructions.

Avoid slow, long-finned or laterally compressed fish that may be stressed by strong current and energetic feeding. Warm-water specialists such as discus are unsuitable even if a broad internet range appears to overlap briefly. Tiny shrimp may be disturbed or eaten opportunistically, and newly hatched shrimp should not be expected to survive. Large snails are less likely to be treated as food, but every invertebrate still needs compatible water and medication choices.

Other Garra species are not automatically ideal companions. They may compete for the same feeding patches and body language. If the goal is a different display rather than a mixed Garra group, compare the Panda Garra as an alternative species. Keep only one clearly researched social plan rather than assembling several similar grazers in limited space.

Arrival, acclimation and quarantine

Prepare the aquarium before delivery. Confirm that ammonia and nitrite are zero, the lid closes fully, the temperature is stable and the filter outlet is working. Switch off intense aquarium lighting before opening the transport box. Compare bag and aquarium temperature, then follow the acclimation instructions supplied with the order. Prolonged exposure to an opened shipping bag can allow water chemistry to deteriorate, so do not improvise an unnecessarily long process.

Quarantine new fish in a mature, covered system whenever possible. The quarantine tank must still meet the species' oxygen and temperature needs; a bare, stagnant container is not safer simply because it is separate. Use dedicated nets and siphons, observe feeding and waste, and avoid preventative medication without a defined reason. If symptoms develop, seek advice from an aquatic veterinarian or an experienced fish-health professional.

Newly moved Garra may pale, hide, climb the glass or patrol the lid. Reduce disturbance and give them dark cover while maintaining oxygenation. Offer a small familiar sinking food after they have settled, then check every group member. Record photographs from the side if you need to compare body condition over the following days.

Our current dispatch schedule, eligible areas and packing information are maintained on the live fish delivery page. The variant selector on this product page is the source for live availability. Do not make travel or tank-stocking plans from an old search snippet alone.

Weekly care and long-term maintenance

Use test results and nitrate accumulation to set a regular partial-water-change schedule. For many stocked aquariums, a weekly change is a sensible starting point, but the correct amount depends on feeding, plant growth, real water volume and source-water chemistry. Match replacement water for temperature and dechlorinate it before it reaches the fish.

Vacuum accessible waste while leaving selected biofilm-covered surfaces intact. Rinse mechanical filter media in removed aquarium water when flow falls, and service biological media in stages so the entire bacterial colony is never disturbed at once. Inspect the impeller, hoses and spray bar because a gradual reduction in flow can go unnoticed until oxygenation suffers.

Weigh or photograph food portions for a week if water quality is difficult to control. Uneaten food hidden behind stones is a common source of excess nutrients. Feed the group across the tank, wait for active consumption, and remove large leftovers. A fish that repeatedly misses food may need targeted feeding or a change in group structure.

Check the lid, cable gaps and water level every week. Examine each fish for symmetrical body condition, clear eyes, intact fins and normal attachment to surfaces. Behavioural changes often appear before dramatic physical signs. Rapid breathing, persistent isolation, loss of grip, flashing or a pinched abdomen deserves immediate water testing and closer observation.

Health, warning signs and responsible treatment

Good health begins with stable water, high oxygen, sufficient food and low social stress. A healthy Doctor Fish is alert, grips and grazes normally, competes for food and maintains a gently rounded body. Colour alone is variable and should be judged alongside breathing, posture, appetite and group position.

Common non-specific warning signs include clamped fins, rapid gill movement, hanging near the outlet, repeated flashing, white spots, reddened skin, weight loss and a fish that can no longer hold position. Test water before reaching for medication. Ammonia, nitrite, temperature or oxygen problems can affect the whole group and must be corrected at their source.

Do not diagnose from one photograph or combine several medications "just in case". Some treatments affect filter bacteria, plants, snails or shrimp. Move a fish only when the isolation system is suitable and the transfer itself will not create greater stress. Follow the product label and professional advice; an aquatic veterinarian is the correct source for prescription treatment.

Quarantine reduces the chance of introducing parasites and allows accurate feeding observation, but it is not a guarantee. Keep equipment separate, wash hands between systems and never release aquarium fish, plants or water into UK waterways. If a fish outgrows the aquarium, arrange a responsible rehome through an experienced keeper or retailer.

Appearance, size and sex differences

The species has an elongated cylindrical body, a scaleless head, two pairs of small barbels and a crescent-shaped ventral mouth with an adhesive disc. Adult colour is normally understated: brown, olive or grey-green, often with darker mottling and a mark near the caudal base. The fins may carry yellowish or dusky tones. This natural pattern is excellent camouflage against river stones.

Published wild measurements commonly place adults around 13-14.5 cm, so use 14-15 cm for aquarium planning. Growth depends on temperature, diet, population and genetics. The listed sale size describes the fish at dispatch and cannot predict an exact growth rate.

Sexing juveniles is unreliable. Mature males may develop more obvious nuptial tubercles around the head and fin bases during breeding condition, while females may be fuller through the abdomen. Body fullness alone can also reflect food or health, so it should not be used as definitive proof of sex.

The four gallery images show representative form and aquarium presentation. They are derivatives rather than documentary photographs of the exact individual dispatched. Natural colour, pattern and proportions vary, and the selected size option determines the approximate dispatch size.

Breeding Garra rufa

Breeding is an advanced project and is not a reliable expectation in a community aquarium. Scientific reviews describe the species as a broadcast spawner over gravel, without nest building or parental care. Field work places the main spawning period in late spring and summer, although timing varies by drainage and local conditions.

A serious attempt requires conditioned adults, excellent water quality, a separate spawning environment and a plan to protect eggs from the adults. Clean shallow gravel and controlled seasonal cues are more defensible starting points than dramatic temperature shocks. Eggs and larvae need dedicated fine foods and stable water that a normal community filter intake may not provide.

Do not use hormone treatments in a home aquarium. Commercial propagation methods reported for this species are not a casual hobby procedure. Most keepers will gain more welfare value from maintaining a stable social group and documenting natural foraging behaviour than from trying to force a spawn.

Why this page does not promote fish pedicures

The nickname Doctor Fish comes from the species' history of nibbling skin in warm springs and its later use in fish spas. That history is part of the animal's common identity, but it is not an aquarium-care requirement and it does not establish a medical benefit. Tropical Fish Co supplies this product as ornamental aquarium livestock, not as a treatment for any human condition.

Human contact systems involve separate public-health, infection-control and animal-welfare questions. The UK Health Security Agency maintains specific guidance on the public-health risks of fish pedicures. Anyone considering a commercial or therapeutic use must consult the current official guidance and relevant local authority rather than relying on an aquarium product page.

Never starve Garra to encourage contact with skin. In a home aquarium they need a nutritionally complete diet, species-appropriate social space and environmental enrichment. Their most interesting natural behaviour is grazing a mature river-style habitat, not acting as a novelty service.

Choosing a size and planning your order

Use the size selector to compare the options currently offered. A smaller juvenile usually adapts well when food is appropriately sized, but it cannot remain in a small tank. A larger fish makes adult proportions easier to see and may compete more strongly at feeding time. Whichever option you choose, the final aquarium plan remains based on an adult group.

Before ordering, measure the tank rather than estimating it, count the intended group, confirm the temperature range of every existing fish and inspect all lid gaps. Check that several sinking-food portions can be placed without one fish controlling all of them. If the aquarium is not mature or the full group cannot be housed, postpone the purchase.

Prices, compare-at prices, stock and delivery eligibility can change. The controls on this page and the checkout are the current source of truth. The Live Arrival Guarantee applies according to its displayed terms, so review the delivery information before selecting a date and make sure someone can receive the parcel promptly.

Garra rufa frequently asked questions

Can Garra rufa be kept at home?

Yes. It can be maintained as ornamental aquarium livestock when the tank is mature, at least 120 cm long, strongly filtered, securely covered and large enough for a social group. It is not suitable for a small novelty tank or an uncycled aquarium.

How big does a Doctor Fish grow?

Plan for about 14-15 cm total length. Published population measurements vary and exceptional larger records exist, but a 14-15 cm working size is appropriate for selecting a home aquarium. The dispatch size shown by a variant is only the starting size.

What is the minimum tank size for Garra rufa?

Use an aquarium at least 120 cm long and around 240 litres for a group of five, with extra space for more fish or tank mates. Footprint, hardscape displacement and usable grazing area matter as much as nominal litres.

Should Doctor Fish be kept alone or in a group?

Keep five or more in a properly sized aquarium. They form loose social groups but may chase conspecifics, so provide several feeding areas and visual barriers. A pair or trio can focus repeated attention on one subordinate individual.

Are Garra rufa peaceful?

They are usually peaceful towards unrelated fish, but can be territorial with their own species and similar bottom grazers. They are also energetic at feeding time. Compatibility should account for current, temperature, body shape and access to food.

Does Garra rufa eat algae?

It grazes aufwuchs, which includes algae and other microscopic life, but it is not a complete algae-control solution. Feed balanced sinking foods and small protein items. Correct excess light or nutrients separately if nuisance algae persists.

What should I feed Doctor Fish?

Offer plant-rich sinking wafers or granules as a planned staple, varied with small frozen foods and occasional blanched vegetables. Feed in several locations so every fish has access, and preserve some mature biofilm for natural foraging.

What temperature does Garra rufa need?

A practical long-term aquarium range is 16-24°C. Authoritative species and supplier records describe broader tolerance, but extremes should not be treated as the routine target. Acclimate gradually and increase oxygenation as water warms.

What pH and hardness are suitable?

Aim for pH 6.0-7.5 and approximately 5-20 dGH. Stable, clean water is more important than repeatedly altering chemistry to hit a single number. Match any tank mate to the same conditions.

Why does a Doctor Fish need a lid?

Garra can climb wet glass and squeeze through gaps around hoses or cables, especially when newly moved. Use a close-fitting lid, inspect every equipment opening and replace the cover immediately after maintenance.

Can Garra rufa live with White Cloud Mountain Minnows?

They can share part of the temperature range, and White Clouds use the upper water more than Garra. The combined aquarium still needs enough length, flow, oxygen and feeding space for both species. Research the adult group requirements before mixing them.

Can Doctor Fish live with shrimp?

Do not rely on tiny shrimp or shrimplets being safe. Adult Garra are opportunistic omnivores and active foragers, so small invertebrates may be eaten or stressed. A dedicated shrimp display is more predictable.

How can I tell male and female Garra rufa apart?

Juveniles are difficult to sex. Mature males may show stronger breeding tubercles on the head and fin bases, while mature females can be fuller-bodied. These features are most useful in conditioned adults and are not guaranteed on a fish selected online.

Can Garra rufa breed in a home aquarium?

It is possible in principle, but difficult and poorly documented as a repeatable home method. They are broadcast spawners without parental care. A separate, carefully controlled breeding and fry system is required; hormone-based commercial methods are not appropriate for home use.

Are the product photographs the exact fish I will receive?

No. The gallery contains representative images for species presentation. The dispatched fish is a live individual, so colour, markings and body proportions vary. Use the selected variant for approximate dispatch size and plan for the normal adult form.

Is Garra rufa suitable for a fish spa?

This listing is for ornamental aquarium keeping only. It makes no therapeutic claim and does not recommend human skin contact. Commercial or public-contact uses require separate official health, welfare and licensing guidance.

What should I check before ordering?

Confirm a mature covered tank of at least 120 cm, zero ammonia and nitrite, strong oxygenation, a group plan, several feeding areas and compatible residents. Then review the live stock selector and current delivery terms on this website.

Care sources and further reading

• FishBase: Garra rufa species summary - accepted identity, distribution, temperature, maximum size, habitat and feeding ecology.
• Fisheries and Oceans Canada: Biological Synopsis of Garra rufa - morphology, wild measurements, reproductive biology, field conditions and gut-content evidence.
• Shimada et al. (2025), Zoological Letters - peer-reviewed review of the species' ecology, biology, breeding and temperature tolerance.
• Maidenhead Aquatics: Doctor Fish husbandry profile - practical 120 cm aquarium, group, flow, diet and escape-prevention guidance.
• UK Health Security Agency: fish-pedicure public-health guidance - separate official context for human-contact systems.

Scientific records describe what the species can experience across a broad natural range. The narrower practical targets on this page are intended for stable long-term aquarium care. Always compare the needs of every animal in the same system.