Bluestreak Cleaner Wrasse (Labroides dimidiatus) M 11cm

Overview

The Bluestreak cleaner wrasse (Labroides dimidiatus) is one of the most recognisable marine fish in the hobby, famous for its vivid blue-and-black stripes and its natural role as a cleaner of other fish. In the wild, these wrasses set up cleaning stations on coral reefs where larger fish visit to have parasites, dead skin and mucus removed. Their behaviour is fascinating to watch and makes them a standout addition to a suitable marine display.

Although beautiful and active, this is not a beginner fish. Labroides dimidiatus is a specialist feeder with very specific dietary needs and does best in a mature, stable reef aquarium with plenty of natural microfauna and a carefully planned feeding regime. For the right aquarist, it can be an exceptional species to keep, offering constant movement and unique interaction with tankmates.

Our medium-sized specimen is supplied with care and packed for a smooth journey, with fast UK delivery and our live arrival guarantee for peace of mind. Please note that success with this species depends heavily on tank maturity, feeding strategy and compatibility with other fish.

Care at a Glance

Origin & Natural Habitat

Bluestreak cleaner wrasses are native to the Indo-Pacific, including the Red Sea, East Africa, the Maldives, Sri Lanka, Southeast Asia and parts of the western Pacific. They inhabit coral reefs, lagoon systems and reef slopes where they establish cleaning stations in prominent locations. At these stations, larger reef fish line up to be cleaned, allowing the wrasse to feed on ectoparasites, loose scales and mucus.

This natural lifestyle means the species is highly active, constantly alert and socially interactive. It also means the fish is adapted to a rich reef environment with abundant passing clients and a steady supply of small food items. In aquariums, this behaviour can be fascinating, but it also creates challenges because the fish may struggle if it cannot find enough suitable food or if the tank is too new or too sterile.

Tank Setup & Water Parameters

To keep Labroides dimidiatus successfully, provide a mature marine aquarium with excellent filtration, strong oxygenation and very stable water quality. A tank of at least 300 litres is recommended, but larger systems are preferable, especially if the wrasse will be housed with multiple fish. Rockwork should create open swimming space as well as sheltered areas for resting and retreat. A secure lid is essential, as wrasses can jump when startled.

Reef-safe conditions are ideal, with live rock and a well-established biological filter. This species often benefits from a tank that has been running for several months or longer, as mature rockwork supports natural grazing opportunities and a healthier overall environment. Avoid placing the fish into a newly set-up marine tank.

Recommended water parameters are 24–28°C, salinity around 1.023–1.026 specific gravity, and pH 8.1–8.4. Keep ammonia and nitrite at zero, nitrate as low as practical, and maintain strong water movement. Consistency matters more than chasing exact numbers, so regular testing and water changes are important.

Because this wrasse is active and inquisitive, it appreciates a varied aquascape with plenty of visual interest. Provide some overhangs and crevices for sleeping, as many wrasses wedge themselves into rockwork at night. Good lighting is suitable for reef tanks, but the fish does not require intense light on its own.

Feeding Guide

Feeding is the most important aspect of long-term success with the Bluestreak cleaner wrasse. In nature, it feeds on ectoparasites and small organisms picked from other fish, so it does not always adapt easily to standard aquarium foods. Some individuals will accept prepared marine foods, but many require patience, frequent feeding and a varied approach.

Offer small meals several times a day where possible. Suitable foods may include enriched frozen mysis, finely chopped marine seafood, copepods, enriched brine shrimp and high-quality marine carnivore preparations. Some keepers have success with live foods during acclimation. Soaked foods with marine vitamins and HUFA supplements can be beneficial.

Do not rely on this species to survive solely on cleaning behaviour in the aquarium. Even in a tank with other fish, it should be treated as a specialist carnivore that needs regular targeted feeding. Observe closely after introduction to ensure it is eating. A healthy specimen will be alert, active and constantly searching the rockwork and water column.

Tank Mates / Compatibility

The Bluestreak cleaner wrasse is generally peaceful and can be kept with a range of non-aggressive marine fish, especially in larger reef systems. It is best suited to calm tankmates that will not outcompete it at feeding time. Reef-safe companions such as clownfish, gobies, blennies, tangs and many dwarf angelfish can be suitable if the aquarium is large enough and feeding is managed carefully.

Avoid housing it with highly aggressive species, boisterous feeders or predatory fish that may stress or consume it. Large triggers, lionfish, groupers and very territorial wrasses are poor choices. Also avoid keeping it in very small tanks where it cannot establish a natural routine or find enough food.

Because this species is a cleaner, it may interact with other fish by picking at their bodies. In a healthy aquarium this is usually harmless, but stressed fish or species with delicate slime coats may react poorly. Always monitor introductions closely. For best results, introduce the cleaner wrasse into a peaceful, mature community where fish are already settled and feeding well.

Why Buy from Tropical Fish Co

At Tropical Fish Co, we understand that specialist marine species need more than just a box and a label. Our fish are sourced and handled with care, packed professionally and dispatched with fast UK delivery to help reduce transit stress. We also offer a live arrival guarantee, giving you added confidence when ordering live marine livestock online.

We aim to provide accurate species information so you can make the right choice for your aquarium. The Bluestreak cleaner wrasse is a beautiful but demanding fish, and we want customers to succeed with it rather than simply buy on impulse. If you are prepared with a mature reef tank, stable water and a proper feeding plan, this species can become one of the most rewarding fish in your marine collection.

Choose Tropical Fish Co for quality livestock, reliable service and knowledgeable support for your aquarium journey.