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Loggerhead sea turtle

Loggerhead sea turtle

Scalloped hammerhead

Scalloped hammerhead

Blacktip reef shark

Blacktip reef shark

Whitespotted wedgefish

Whitespotted wedgefish

Ocellated eagle ray

Ocellated eagle ray

Flapnose ray

Flapnose ray

Round ribbontail ray

Round ribbontail ray

Leopard whipray

Leopard whipray

Giant grouper

Giant grouper

Atlantic Goliath grouper

Atlantic Goliath grouper

Bowmouth guitarfish

Bowmouth guitarfish

Zebra shark

Zebra shark

Spotted wobbegong

Spotted wobbegong

Golden trevally

Golden trevally

Blackside hawkfish

Blackside hawkfish

Sunburst butterflyfish

Sunburst butterflyfish

Threadfin butterflyfish

Threadfin butterflyfish

Eyestripe surgeonfish

Eyestripe surgeonfish

Common bluestripe snapper

Common bluestripe snapper

Five-lined snapper

Five-lined snapper

Redbelly yellowtail fusilier

Redbelly yellowtail fusilier

Yellowbanded sweetlips

Yellowbanded sweetlips

Clown triggerfish

Clown triggerfish

Humphead wrasse

Humphead wrasse

Yellowbar angelfish

Yellowbar angelfish

King angelfish

King angelfish

Bluespine unicornfish

Bluespine unicornfish

Snubnose pompano

Snubnose pompano

Indo-pacific tarpon

Indo-pacific tarpon

Bluestreak cleaner wrasse

Bluestreak cleaner wrasse

Dark-banded fusilier

Dark-banded fusilier

Potato grouper

Potato grouper

Bluestreak cleaner wrasse

Bluestreak cleaner wrasse

Facts

LatinLabroides dimidiatus
Size14 cm
FoodParasites located on other fish
HabitatCoral reefs
IUCN

Least concern

LocationThe Red Sea, Indian Ocean and western Pacific
Map

Cleaning help

The bluestreak cleaner wrasse feeds on parasites that live on the body surfaces, gills and mouths of larger fish such as bass and moray eels. Predatory fish allow the bluestreak cleaner wrasse to work in peace, even though they could easily swallow them whole.

Mutual benefits

In the coral reef, predatory fish actively seek out the bluestreak cleaner wrasse. They want to have parasites removed from their bodies. If a predatory fish has too many parasites, it can become sick. The bluestreak cleaner wrasse benefits by securing a food source.

Why doesn't the bluestreak cleaner wrasse get eaten?

The bluestreak cleaner wrasse has a stunning colouration. It is silver-blue and has a prominent lateral black stripe from its snout to the tip of its tail. This makes it easy to identify. The stripe allows the bigger fish to recognise the bluestreak cleaner wrasse and not eat them.

Changes gender

The bluestreak cleaner wrasse lives in groups with a dominant male and his harem of females. If the male dies, the largest of the females changes gender and becomes a male. The gender change takes place in a few days.


The Shipwreck

Venomous fish

Darkfin hind

The small mouths

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