The Cleaner Wrasse is one of the most fascinating fish on a coral reef. Instead of simply hunting for food around rockwork, it operates something resembling a tiny underwater service station: larger fish deliberately approach, hold still, spread their fins, and sometimes even open their mouths and gill covers while the wrasse inspects them for parasites and other edible material.
The species most commonly meant by Cleaner Wrasse in the marine aquarium hobby is the Bluestreak Cleaner Wrasse, Labroides dimidiatus. It is also known as the Common Cleaner Wrasse, Blue-Streak Cleaner Wrasse, or Cleanerfish.
Its slender body is marked by a striking black stripe bordered by pale blue, white, and sometimes yellow coloration. Although the fish reaches only about 5–5.5 inches, it has an ecological importance far greater than its size suggests.
Unfortunately, the Bluestreak Cleaner Wrasse is also one of the more difficult commonly sold marine aquarium fishes to maintain successfully.
The reason is its highly specialized feeding ecology. Wild fish obtain much of their food by cleaning other fishes, consuming ectoparasites and mucus during hundreds of interactions. A normal home aquarium simply cannot reproduce that enormous supply of clients.
Some individuals learn to eat frozen and prepared foods and can live successfully for years. Others never adapt sufficiently and slowly lose weight despite apparently excellent aquarium conditions.
For that reason, Labroides dimidiatus is best considered an advanced marine aquarium species, not an easy solution for parasites.
🐟 Cleaner Wrasse Care at a Glance
| Care Requirement | Bluestreak Cleaner Wrasse |
|---|---|
| Scientific name | Labroides dimidiatus |
| Other names | Bluestreak Cleaner Wrasse, Common Cleaner Wrasse, Cleanerfish |
| Family | Labridae |
| Environment | Marine |
| Natural range | Indo-Pacific |
| Adult size | Up to about 5.5 inches |
| Recommended tank size | About 90 gallons minimum |
| Preferred system | Large, mature aquarium with numerous fish |
| Temperature | About 75–82°F |
| pH | Approximately 8.1–8.4 |
| Specific gravity | Approximately 1.023–1.026 |
| Diet | Specialized cleaner; ectoparasites, mucus, small meaty foods |
| Feeding frequency | Several small meals daily in captivity |
| Temperament | Generally peaceful |
| Reef safe | Yes |
| Care level | Difficult/advanced |
| Social arrangement | Usually singly or as a compatible pair |
| Reproduction | Pelagic spawner |
| Sex change | Protogynous, with unusual sexual flexibility |
| Jump risk | High; secure lid required |
🔬 What Is a Cleaner Wrasse?
The Bluestreak Cleaner Wrasse belongs to the family Labridae, the wrasses.
Wrasses are an enormously diverse group containing everything from tiny reef fishes to powerful predators, but Labroides species have evolved a particularly unusual lifestyle.
They are specialized cleaner fishes.
Rather than simply catching plankton or searching rocks for small animals, Cleaner Wrasses maintain locations known as cleaning stations.
Other fishes visit these stations and allow the wrasse to inspect their bodies.
The Cleaner Wrasse may examine:
- Skin
- Fins
- Mouth
- Gill covers
- Gill area
- Wounds
- Other accessible surfaces
During the interaction, the wrasse can remove and eat parasites and other material.
This relationship has become one of the most intensively studied examples of cooperation between different animal species.
🧼 What Does a Cleaner Wrasse Actually Clean?
Cleaner Wrasses consume a variety of material obtained from client fishes.
This can include:
- Ectoparasitic crustaceans
- Parasitic worms
- Dead or damaged material
- Fish mucus
The relationship is not quite as simple as “wrasse eats parasites and fish gets healthy.”
Research has shown that Bluestreak Cleaner Wrasses can actually prefer client mucus to some parasites.
Mucus is nutritious for the wrasse, but excessive mucus feeding is not necessarily beneficial to the client.
This creates an interesting conflict between the two animals.
The fish wants parasites removed.
The wrasse sometimes wants the tastier mucus.
Much of the extraordinary Cleaner Wrasse research conducted over recent decades investigates how these animals negotiate this relationship.
🧠 Cleaner Wrasses Are Remarkably Complex Fish
The interaction between Cleaner Wrasses and their clients is far more sophisticated than simple instinctive feeding.
A Cleaner Wrasse must constantly evaluate:
- Which fish wants cleaning
- Which clients might be dangerous
- Whether another client is waiting
- Whether a client will tolerate mucus feeding
- Whether the client can simply leave
- Whether it should behave more cooperatively
Clients can also respond when they receive poor service.
Some may:
- Swim away
- Chase the cleaner
- Avoid that cleaning station later
- Choose a different cleaner
The result is a surprisingly complicated cooperative relationship that has made Labroides dimidiatus an important species in animal-behavior research.
🕺 The Cleaner Wrasse Dance
Bluestreak Cleaner Wrasses advertise their services with characteristic swimming movements.
A wrasse may approach a potential client while performing an oscillating or dance-like motion.
The rear portion of the body moves noticeably up and down.
The display helps communicate:
“I am a cleaner, not prey.”
A receptive client may then adopt a distinctive pose.
It can:
- Stop swimming
- Spread its fins
- Tilt its body
- Open its mouth
- Flare its gill covers
The Cleaner Wrasse then begins its inspection.
This communication is particularly important when the client is a predator capable of swallowing the wrasse.
🦈 Why Don’t Large Fish Eat Cleaner Wrasses?
One of the most extraordinary aspects of cleaning stations is that Cleaner Wrasses regularly enter the personal space of large predators.
A client may be capable of swallowing the wrasse easily.
Yet the Cleaner Wrasse may safely:
- Swim around its face
- Pick at its teeth
- Enter its mouth
- Inspect around the gills
The predator benefits enough from cleaning that it often tolerates the cleaner.
Distinctive Cleaner Wrasse coloration and behavior also help identify the fish’s specialized role.
However, cleaners are not magically immune to predation.
There is always some danger when interacting with predatory fishes.
🌊 What Is a Cleaning Station?
A cleaning station is a location where Cleaner Wrasses regularly interact with client fish.
Stations may occur around:
- Coral heads
- Rock outcrops
- Reef ledges
- Caves
- Prominent reef structures
Fish learn where cleaning services are available and may return repeatedly.
A successful cleaner can interact with a remarkable number of clients during a single day.
This is one reason aquarium husbandry is so challenging.
Even a heavily stocked home aquarium contains only a tiny fraction of the potential clients available on a natural coral reef.
🌍 Where Do Cleaner Wrasses Come From?
The Bluestreak Cleaner Wrasse has an enormous Indo-Pacific distribution.
Its range extends from:
- Persian Gulf
- Red Sea
- East Africa
- Indian Ocean
- Southeast Asia
- Indonesia
- Philippines
- Southern Japan
- Australia
- Central Pacific islands
- Marquesas
- Line Islands
- Ducie Island
It inhabits coral-rich environments ranging from protected lagoons to seaward reefs.
Although individuals have been recorded much deeper, they are commonly encountered in relatively shallow reef habitat.
🪸 Natural Habitat
Bluestreak Cleaner Wrasses occur around:
- Coral reefs
- Reef flats
- Lagoons
- Reef slopes
- Coral-rich rock structures
Their territory is usually organized around a cleaning station.
Unlike a Lawnmower Blenny that spends most of its time scraping surfaces, a Cleaner Wrasse is constantly interacting with the surrounding fish community.
This means its ecological habitat includes not only physical reef structure but also a large population of potential client fishes.
That second requirement is much harder to reproduce in captivity.
📏 How Big Do Cleaner Wrasses Get?
The Bluestreak Cleaner Wrasse can reach approximately 14 centimeters, or about 5.5 inches.
Many aquarium specimens remain somewhat smaller.
The body is slender rather than deep, giving the fish a delicate appearance.
Despite its modest size, this is an extremely active species.
A Cleaner Wrasse may spend much of the day:
- Swimming around its territory
- Approaching fish
- Inspecting clients
- Searching for additional food
Aquarium space requirements should therefore be based on its lifestyle rather than simply its length.
🎨 What Does a Bluestreak Cleaner Wrasse Look Like?
The coloration is perfectly suited to making the fish conspicuous.
A typical individual has:
- Pale or bluish forward body
- Bright blue along the sides
- Strong black horizontal stripe
- Dark posterior body
- Pale underside
- Sometimes yellow coloration toward the back
The black stripe runs from the snout through the eye and becomes increasingly broad toward the tail.
Juveniles and adults are both recognizable as cleaners.
The high-contrast black-and-blue pattern functions as an important visual signal to potential client fishes.
🔬 Cleaner Wrasse Taxonomy
The accepted scientific name of the common Bluestreak Cleaner Wrasse remains:
Labroides dimidiatus
However, Cleaner Wrasse taxonomy has recently become considerably more interesting.
A major 2026 revision of the genus Labroides recognized additional species and described two new Cleaner Wrasses:
- Labroides flammulatus
- Labroides inopinatus
That same research found substantial genetic complexity within fishes currently identified as Labroides dimidiatus.
In other words, what aquarists currently call the widespread Bluestreak Cleaner Wrasse may eventually prove to contain more than one evolutionary lineage.
For the present, Labroides dimidiatus remains the accepted aquarium identification for the familiar Bluestreak Cleaner Wrasse.
🏡 Cleaner Wrasse Tank Size
A 90-gallon aquarium or larger is a sensible practical minimum for Labroides dimidiatus.
However, tank volume alone does not solve the main husbandry problem.
A 90-gallon aquarium containing three tiny fish provides very few cleaning opportunities.
A much larger aquarium containing numerous healthy medium-to-large reef fishes comes closer to providing the social environment Cleaner Wrasses naturally experience.
Systems around 125–150 gallons or larger are particularly preferable for serious long-term maintenance.
The ideal aquarium provides:
- Significant swimming room
- Numerous potential client fishes
- Mature rockwork
- Excellent filtration
- Stable water parameters
- Secure cover
- Frequent feeding
This is not a fish selected simply because it physically fits into a small aquarium.
🪨 Setting Up a Cleaner Wrasse Aquarium
Provide a mature reef-style environment with:
- Live rock
- Caves
- Overhangs
- Open swimming areas
- Moderate-to-strong circulation
- Numerous resting locations
A wrasse may select a prominent reef area as its preferred cleaning station.
Fish should be able to approach the area from open water.
Unlike sand-burying wrasses, Labroides dimidiatus does not depend on a deep sand bed for sleeping.
Instead, it rests around reef structure.
🌊 Water Movement
Moderate reef-style circulation works well.
The species is accustomed to swimming continuously around coral environments.
Provide:
- Good circulation
- Strong surface agitation
- High oxygen availability
- Open swimming areas
- Calmer areas around reef structure
A heavily stocked aquarium containing many client fishes also requires excellent oxygenation.
Good gas exchange becomes particularly important at night.
💧 Cleaner Wrasse Water Parameters
Maintain stable tropical marine conditions.
A useful range is:
- Temperature: 75–82°F
- pH: 8.1–8.4
- Specific gravity: 1.023–1.026
- Ammonia: 0 ppm
- Nitrite: 0 ppm
- Nitrate: Kept appropriately low
For a reef aquarium, specific gravity near 1.025–1.026 is appropriate.
The fish’s difficult reputation is primarily related to feeding rather than unusually narrow water chemistry requirements.
Stable, high-quality seawater is nevertheless essential.
🍽️ What Do Cleaner Wrasses Eat?
This is the central challenge of Cleaner Wrasse husbandry.
Wild Labroides dimidiatus feeds by cleaning other fishes.
Its natural diet includes:
- Ectoparasitic crustaceans
- Parasitic organisms
- Fish mucus
- Other material collected from client fish
The species is commonly described as an obligate cleaner because cleaning is such an important part of its normal feeding ecology.
A home aquarium cannot reproduce hundreds of daily cleaning interactions.
Therefore, long-term success usually depends on getting the Cleaner Wrasse to accept supplemental aquarium foods.
🍤 What Should You Feed a Cleaner Wrasse?
Cleaner Wrasses that accept aquarium foods should receive small meaty items such as:
- Finely chopped mysis shrimp
- Enriched brine shrimp
- Copepods
- Calanus
- Fish eggs
- Finely chopped marine seafood
- Small carnivore pellets
- Fine marine flakes
- Frozen plankton preparations
Particle size matters.
Cleaner Wrasses naturally take many small bites throughout the day.
Large chunks of seafood are not an ideal substitute.
⏰ How Often Should Cleaner Wrasses Be Fed?
Several small meals throughout the day are preferable.
A practical target is approximately:
3–5 small feeding opportunities daily
depending on aquarium conditions and how well the individual feeds.
An automatic feeder can be very useful if the fish accepts small pellets.
For example:
Morning: frozen mysis
Late morning: small pellets
Afternoon: small pellets
Evening: frozen plankton or brine shrimp
The goal is to reproduce the continuous availability of small food items found on the reef.
⚠️ The Biggest Risk Is Starvation
A Cleaner Wrasse can appear active for quite some time while slowly losing body condition.
This is why aquarists sometimes mistakenly believe a fish is thriving until it becomes obviously emaciated.
Watch for:
- Hollow abdomen
- Pinched body
- Sunken area behind the head
- Reduced activity
- Increasing desperation around client fish
- Weak feeding response
A fish that cleans tank mates enthusiastically is not necessarily receiving enough calories.
There simply may not be enough parasites and mucus available in an aquarium to sustain it.
🛒 Never Buy One Without Seeing It Eat
This is one of the most useful rules when shopping for a Cleaner Wrasse.
Ask the store to feed the fish.
Ideally, purchase an individual already accepting:
- Frozen mysis
- Brine shrimp
- Pellets
- Other prepared marine foods
A specimen that repeatedly ignores all prepared foods represents a much greater husbandry risk.
Do not assume:
“It will learn once I get it home.”
Some do.
Some do not.
Choosing an established feeder gives the fish a far better chance of long-term success.
🤖 An Automatic Feeder Can Help
If the fish accepts pellets, an automatic feeder can provide several tiny meals throughout the day.
That makes it particularly valuable for specialized grazers and planktivores that benefit from frequent food.
Keep portions small.
A heavily fed large marine aquarium can experience rapidly increasing:
- Nitrate
- Phosphate
- Detritus
Filtration and feeding therefore need to be balanced carefully.
🧼 Will Cleaner Wrasses Cure Marine Ich?
No.
This is one of the most important myths surrounding the species.
A Cleaner Wrasse may remove certain external parasites from fish, but it cannot eliminate the entire life cycle of diseases such as marine ich.
The organism responsible for marine ich has stages that occur away from the fish.
Likewise, adding a Cleaner Wrasse is not a reliable treatment for:
- Marine velvet
- Flukes
- Serious bacterial infections
- Internal parasites
A sick aquarium needs appropriate diagnosis and disease management.
Do not purchase a Cleaner Wrasse as medicine.
⚠️ Cleaner Fish Can Potentially Move Parasites
There is another reason cleaning should not be treated as disease control.
Research has shown that Cleaner Wrasses can potentially become exposed to generalist ectoparasites and may help transfer them between client fishes during repeated cleaning interactions.
This does not make cleaning behavior harmful overall.
On natural reefs, the ecological benefits of cleaners are well documented.
It simply reinforces the point that a cleaner fish is not a substitute for quarantine and proper disease treatment.
🧪 Quarantine Still Matters
Every new marine fish should be evaluated carefully before being introduced into an established display.
Cleaner Wrasses are no exception.
Quarantine presents an additional challenge because there may be few or no client fish available.
This makes it particularly important to purchase an individual already eating prepared foods.
During quarantine, provide:
- Appropriate hiding structure
- Several small meals daily
- Excellent oxygenation
- Stable water
- Careful monitoring of body condition
Do not starve a Cleaner Wrasse during quarantine simply because the hospital tank contains no parasites.
🐠 Best Cleaner Wrasse Tank Mates
The best companions are peaceful-to-moderately assertive marine fishes large enough to interact naturally with the cleaner.
Potential tank mates include:
- Green Chromis
- Lyretail Anthias
- Anthias
- Coral Beauty Angelfish
- Flame Angelfish
- Surgeonfish
- Larger wrasses
- Butterflyfish
- Peaceful angelfish
- Larger clownfish
- Other appropriate reef fishes
Larger tangs, angels, and butterflyfishes may become enthusiastic clients.
A big aquarium containing numerous medium-sized reef fishes is much more suitable than a nano reef containing three tiny gobies.
🐟 Cleaner Wrasse and Surgeonfish
Surgeonfish can make particularly natural client fishes.
Tangs frequently experience ectoparasites in the wild and commonly visit cleaning stations.
A Cleaner Wrasse may inspect:
- Sides
- Fins
- Head
- Gill area
The interaction can produce some of the most natural behavior available in a large reef aquarium.
Remember, however, that the tang should not be deliberately exposed to parasites simply to provide food for the wrasse.
🦐 Can Cleaner Wrasses Live With Cleaner Shrimp?
Yes.
Cleaner Shrimp and Cleaner Wrasses can coexist in sufficiently large aquariums.
Both may provide cleaning services.
They do not necessarily compete aggressively because they occupy the reef differently.
However, a home aquarium containing both cleaners still does not need or benefit from a parasite outbreak.
Their presence should be viewed as fascinating natural behavior—not disease prevention equipment.
🐌 Are Cleaner Wrasses Safe With Snails?
Yes.
Common reef snails such as Nassarius Snails are generally safe.
The Cleaner Wrasse is not adapted to crush mollusk shells.
Ordinary reef cleanup crews containing:
- Snails
- Hermit crabs
- Cleaner Shrimp
are generally compatible.
🪸 Are Cleaner Wrasses Reef Safe?
Yes.
Bluestreak Cleaner Wrasses are considered excellent reef-safe fish.
They normally leave:
- SPS corals
- LPS corals
- Soft corals
- Zoanthids
- Clams
- Anemones
alone.
Their feeding behavior is directed primarily toward other fishes and small meaty foods rather than coral tissue.
This makes coral compatibility one of the easiest aspects of their care.
⚠️ Can Cleaner Wrasses Annoy Other Fish?
Yes.
A Cleaner Wrasse placed into an aquarium with too few appropriate clients may repeatedly attempt to clean fish that are not interested.
This can lead to:
- Persistent following
- Repeated inspection
- Picking at mucus
- Stress to unwilling client fish
The wrasse is simply attempting to perform its natural feeding behavior.
Unfortunately, a home aquarium may give the other fish very little room to escape.
This is another reason that larger, well-stocked systems are preferable.
🦁 Can Cleaner Wrasses Live With Lionfish?
This is risky.
Cleaner Wrasses naturally interact with predators and may sometimes receive a remarkable degree of protection because of their cleaning role.
However, aquarium conditions are different.
A sufficiently large Lionfish can swallow a Cleaner Wrasse.
Recognition of a cleaning relationship is not a guarantee that predation will never occur.
If keeping the Cleaner Wrasse alive is the priority, large ambush predators are poor choices.
😇 Are Cleaner Wrasses Aggressive?
Bluestreak Cleaner Wrasses are generally peaceful toward unrelated fishes.
They spend much more energy:
- Cleaning
- Feeding
- Swimming
- Maintaining their station
than attacking ordinary community fish.
Territorial conflict can occur between Cleaner Wrasses themselves.
A cleaning station represents a valuable food resource, and another cleaner can be viewed as competition.
👥 Can You Keep Two Cleaner Wrasses Together?
Compatible pairs occur naturally and may work in appropriately large aquariums.
However, introducing two random adults is not guaranteed to produce a pair.
Possible outcomes include:
- Pair formation
- Territorial aggression
- One fish dominating the other
- Continual chasing
For most aquarists, keeping one Cleaner Wrasse is simpler.
Pairs should generally be attempted only in large systems by experienced keepers.
🧬 Male vs. Female Cleaner Wrasse
Male and female Bluestreak Cleaner Wrasses look broadly similar.
Sex is not as obvious as it is in a species such as the Lyretail Anthias.
The reproductive biology is more interesting than external differences.
Labroides dimidiatus has traditionally been described as protogynous.
That means individuals typically mature first as females and can later become males.
🔄 Can Cleaner Wrasses Change Sex?
Yes.
Female-to-male sex change is well established in the species.
In social groups containing a dominant male and multiple females, loss of the male can allow a female to become the replacement male.
Interestingly, research has also confirmed bidirectional sexual flexibility under certain conditions in Labroides dimidiatus.
That makes Cleaner Wrasse reproductive biology more complex than the simple female-to-male system often described for reef fishes.
For ordinary aquarium husbandry, the important point is that sex and social status can change according to the social environment.
💕 Cleaner Wrasse Pairs
Pairs may:
- Share territory
- Clean clients together
- Interact cooperatively
- Spawn together
Research has even found differences in cleaning behavior when two fish work together compared with when they operate alone.
Cleaning stations therefore represent both interspecies cooperation between cleaner and client and social interactions between Cleaner Wrasses themselves.
🥚 Breeding Cleaner Wrasses
Bluestreak Cleaner Wrasses are pelagic spawners.
A male and female form a reproductive pair and release gametes into open water.
Rather than attaching eggs to a nest:
- The pair courts.
- They rise into the water column.
- Eggs and sperm are released.
- Fertilized eggs drift into the plankton.
- There is no parental care.
This reproductive strategy is common among many reef wrasses.
🐣 Raising Cleaner Wrasse Fry
Captive propagation is considerably more difficult than obtaining spawning behavior.
The larvae are tiny and planktonic.
Successful rearing can require:
- Specialized larval aquariums
- Copepod nauplii
- Rotifers or other suitable tiny foods
- Phytoplankton culture
- Gentle circulation
- Careful lighting
- Frequent feeding
- Excellent water quality
Ordinary reef filtration rapidly removes delicate larvae.
Breeding Cleaner Wrasses is therefore an advanced marine aquaculture project.
🏃 Do Cleaner Wrasses Jump?
Yes.
Cleaner Wrasses are fast, active fishes and can easily jump from uncovered aquariums.
Common triggers include:
- Being startled
- Aggression
- Nighttime disturbances
- Introduction to a new tank
- Sudden lighting changes
- Aquarium maintenance
A secure mesh lid or fitted canopy is strongly recommended.
Check small openings around:
- Power cords
- Overflow boxes
- Plumbing
- Feeding ports
Wrasses can escape through surprisingly narrow gaps.
🌙 Where Do Cleaner Wrasses Sleep?
At night, Bluestreak Cleaner Wrasses generally retire around reef structure.
They do not behave like sand-burying wrasses that disappear beneath the substrate every evening.
Instead, they seek sheltered areas around:
- Caves
- Reef crevices
- Rock structure
A fish that disappears when the lights go out and reappears the following morning is behaving normally.
🩺 Signs of a Healthy Cleaner Wrasse
A healthy individual should generally show:
- Active swimming
- Full body condition
- Clear eyes
- Normal breathing
- Strong feeding response
- Intact fins
- Normal cleaning behavior
- Alert interactions with fish
Pay particularly close attention to body weight.
A Cleaner Wrasse can remain active even while gradually becoming too thin.
A hollow belly is one of the clearest warnings that the aquarium is not meeting its nutritional needs.
🏪 Choosing a Healthy Cleaner Wrasse
Choose extremely carefully.
Look for a fish that:
- Is already eating prepared foods
- Has a full abdomen
- Swims actively
- Breathes normally
- Has clear eyes
- Has intact fins
- Shows no obvious parasites
Ask the retailer:
“Can you show me this exact fish eating?”
This matters much more than selecting the brightest specimen.
A slightly less colorful Cleaner Wrasse eating frozen mysis enthusiastically is a much better purchase than a beautiful fish that refuses everything except cleaning tank mates.
⚠️ Why Cleaner Wrasses Are Not Beginner Fish
At first glance, the species appears beginner friendly.
It is:
- Small
- Peaceful
- Reef safe
- Active
- Beautiful
The problem is nutrition.
A fish can have perfect:
- Temperature
- Salinity
- pH
- Filtration
and still starve.
Successful long-term care requires an aquarist who can evaluate:
- Feeding adaptation
- Body condition
- Client availability
- Feeding frequency
- Tank-mate stress
That makes the Bluestreak Cleaner Wrasse an advanced rather than beginner species.
🆚 Cleaner Wrasse vs. Cleaner Shrimp
Both are famous reef cleaners, but they are very different aquarium animals.
Cleaner Wrasse
- Fish
- Constantly active
- Specialized cleaner
- Requires substantial swimming space
- Difficult feeding requirements
- Advanced care
Cleaner Shrimp
- Crustacean
- Establishes stationary cleaning areas
- Readily eats ordinary aquarium food
- Much easier to maintain
- Suitable for considerably smaller aquariums
For most aquarists who simply want to observe cleaning behavior, the Cleaner Shrimp is the easier choice.
🆚 Cleaner Wrasse vs. Cleaner Goby
Several Elacatinus gobies also clean other fishes.
Cleaner gobies differ in an important way: many are facultative cleaners and adapt much more readily to ordinary aquarium foods.
Cleaner Wrasse
- Labroides dimidiatus
- Obligate cleaning specialist
- Very active
- Larger
- Difficult long-term feeding
- Best for advanced aquarists
Cleaner Goby
- Often Elacatinus species
- Small
- Perching behavior
- Typically accepts prepared foods readily
- Much easier aquarium choice
For most home aquariums, a captive-bred cleaner goby is a considerably more practical fish.
For more information on gobies generally, see Goby Fish.
🆚 Cleaner Wrasse vs. Lyretail Anthias
Both are active reef fish with high nutritional demands, but their feeding strategies differ dramatically.
Cleaner Wrasse
- Specialized cleaner
- Eats parasites and mucus naturally
- Difficult dietary adaptation
- Usually solitary or paired
Lyretail Anthias
- Zooplankton feeder
- Readily takes many aquarium foods
- Social harem structure
- Often maintained in groups
The Lyretail Anthias needs frequent feeding but is generally much easier to sustain nutritionally than a wild Cleaner Wrasse that refuses substitute foods.
❤️ Cleaner Wrasse Lifespan
FishBase reports a maximum recorded age of around 4 years, although individual Cleaner Wrasses have reportedly survived substantially longer under excellent aquarium care.
Aquarium longevity depends heavily on:
- Adaptation to prepared food
- Feeding frequency
- Body condition
- Tank size
- Client availability
- Water quality
- Disease prevention
Short aquarium survival should not be considered normal simply because the species has historically had a poor captive reputation.
The goal should always be long-term maintenance.
🌍 Cleaner Wrasse Conservation and Reef Importance
The Bluestreak Cleaner Wrasse is widespread across the Indo-Pacific and performs an important ecological role.
Long-term field experiments have demonstrated that removing Cleaner Wrasses from reef areas can alter the surrounding fish community.
Their influence extends beyond simply removing a few parasites.
Cleaning stations can affect:
- Fish movement
- Client behavior
- Community structure
- Parasite relationships
- Interactions among reef species
This ecological importance is another reason aquarists should think carefully before purchasing a fish with such specialized natural requirements.
✅ Should You Keep a Cleaner Wrasse?
For most beginner marine aquarists, no.
For an experienced aquarist with the right system, possibly.
A suitable setup should ideally include:
- 90 gallons or considerably larger
- Mature reef structure
- Numerous suitable client fishes
- Excellent filtration
- Stable marine water
- Strong oxygenation
- Secure cover
- Ability to provide multiple small meals daily
Most importantly, purchase only a healthy individual already demonstrating a strong response to appropriate aquarium foods.
💙 Is a Cleaner Wrasse Right for Your Aquarium?
Few reef fishes demonstrate a more extraordinary natural behavior than Labroides dimidiatus.
Watching a tang or angelfish approach a cleaning station, hold completely still, and allow a tiny wrasse to inspect its fins, mouth, and gill area provides an authentic glimpse into the complex social world of coral reefs.
But fascinating behavior does not automatically make a species suitable for every aquarium.
The Bluestreak Cleaner Wrasse is specialized for a life in which hundreds of potential clients may pass through its territory and provide a constant supply of tiny meals.
No normal home aquarium can fully recreate that environment.
The best candidates for captivity are therefore fish that have already learned to consume prepared foods and are kept in large, mature, heavily populated marine systems where cleaning behavior supplements rather than entirely supplies their nutrition.
Do not purchase one to cure marine ich.
Do not assume it will eventually eat pellets.
And do not mistake constant cleaning activity for proof that the fish is receiving enough food.
For the experienced keeper willing to meet those specialized needs, however, the Bluestreak Cleaner Wrasse can be one of the most behaviorally fascinating fishes in the entire marine aquarium hobby.
❓ Frequently Asked Questions
What is the scientific name of the Cleaner Wrasse?
The common Bluestreak Cleaner Wrasse is Labroides dimidiatus.
How big do Cleaner Wrasses get?
Labroides dimidiatus can reach approximately 5.5 inches, or 14 centimeters.
What size tank does a Cleaner Wrasse need?
Approximately 90 gallons is a practical minimum, with substantially larger, well-stocked aquariums preferable.
Are Cleaner Wrasses difficult to keep?
Yes. Their specialized feeding requirements make them advanced marine aquarium fish.
What do Cleaner Wrasses eat?
Wild fish consume ectoparasites and mucus removed from client fishes. Aquarium specimens that adapt may eat mysis shrimp, enriched brine shrimp, copepods, small pellets, and other finely sized meaty foods.
How often should Cleaner Wrasses be fed?
Several small meals per day are preferable because they naturally obtain many small feeding opportunities throughout the day.
Are Cleaner Wrasses obligate cleaners?
The Bluestreak Cleaner Wrasse is considered a highly specialized or obligate cleaner, with cleaning interactions making up a major component of its natural feeding ecology.
Do Cleaner Wrasses remove parasites?
Yes. They remove and consume various ectoparasites from client fishes.
Will a Cleaner Wrasse cure marine ich?
No. It cannot eliminate all stages of marine ich or reliably cure an infected aquarium.
Will a Cleaner Wrasse cure marine velvet?
No. Serious marine diseases require proper diagnosis and appropriate treatment.
Are Cleaner Wrasses reef safe?
Yes. They generally leave healthy corals and common reef invertebrates alone.
Can Cleaner Wrasses live with Cleaner Shrimp?
Yes. Cleaner Shrimp can coexist with them in appropriately sized aquariums.
Can Cleaner Wrasses live with tangs?
Yes. Surgeonfish can make particularly natural client fishes in sufficiently large aquariums.
Can two Cleaner Wrasses live together?
Compatible pairs may coexist, but two random adults can become territorial. One is easier for most aquarists.
Do Cleaner Wrasses change sex?
Yes. Labroides dimidiatus is known for female-to-male sex change, and research has also demonstrated unusual bidirectional sexual flexibility under certain social conditions.
Do Cleaner Wrasses jump?
Yes. A tightly fitted aquarium cover is strongly recommended.
Do Cleaner Wrasses breed in aquariums?
Spawning is possible, but raising their tiny planktonic larvae is an advanced marine aquaculture project.
Should I buy a Cleaner Wrasse that is not eating at the store?
No. Choosing an individual already accepting prepared aquarium foods greatly improves the chances of long-term success.
Is a Cleaner Wrasse good for beginners?
No. Despite being peaceful and reef safe, its specialized feeding ecology makes the Bluestreak Cleaner Wrasse better suited to experienced marine aquarists.
🔗 Related Articles
- Cleaner Shrimp
- Goby Fish
- Lyretail Anthias
- Anthias
- Green Chromis
- Midas Blenny
- Lawnmower Blenny
- Banggai Cardinalfish
- Clownfish
- Surgeonfish
📚 Sources
- FishBase — Labroides dimidiatus Species Summary
- World Register of Marine Species — Labroides Taxonomy
- Raffles Bulletin of Zoology — 2026 Revision of Labroides Cleaner Wrasses
- Fishes of Australia — Common Cleaner Wrasse, Labroides dimidiatus
- LiveAquaria — Bluestreak Cleaner Wrasse Care
- Quality Marine — Bluestreak Cleaner Wrasse
- PubMed — Cleaner Wrasse Preference for Client Mucus
- PubMed — Cleaner Fish and Potential Ectoparasite Transmission
- PubMed — Cooperation Between Paired Cleaner Wrasses
