Common name: Bullethead parrotfish

Scientific name: Chlorurus sordidus (Forsskål, 1775)

General information

The Bullethead Parrotfish, scientifically known as Chlorurus sordidus, is a vibrant and active member of the reef community. This species is known for its remarkable ability to change colors and patterns throughout its life stages, which is a characteristic of many parrotfish species. Juveniles typically display a duller coloration, while adults can exhibit a range of colors from greens and blues to pinks and yellows, often with intricate patterns.

Parrotfish are named for their beak-like teeth, which are used to scrape algae and dead coral off of hard surfaces. This feeding behavior is crucial for the health of coral reefs, as it helps to prevent algal overgrowth and promotes coral growth by keeping the reef surfaces clean for coral larvae to settle.

Details

Recommended minimum tank volume
400 liter (110 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
22 to 28 °C (72 to 82 °F)
Acidity
pH 7.8 to 8.4
Average size
40 cm (1′4″)
Care level
Moderate to easy Needs ample swimming space
Diet
Herbivore Algae-based diet; supplements beneficial
Social
Solo Can be territorial; best kept alone
Reefsafe
Yes
Aggression
Semi aggresive May be aggressive towards conspecifics
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Parrotfish
    Scaridae
  6. Genus
    Parrotfish
    Chlorurus
  7. Species
    Bullethead parrotfish
    Chlorurus sordidus (Forsskål, 1775)
  8. Synonyms
    Callyodon albipunctatus Seale, 1910
    Callyodon bipallidus Smith, 1956
    Callyodon cyanogrammus Jordan & Seale, 1906
    Callyodon erythrodon (Valenciennes, 1840)
    Callyodon margaritus (Cartier, 1874)
    Callyodon rostratus Seale, 1910
    Callyodon sordidus (Forsskål, 1775)
    Pseudoscarus goldiei Macleay, 1883
    Pseudoscarus margaritus Cartier, 1874
    Pseudoscarus platodoni Seale, 1901
    Pseudoscarus vitriolinus Bryan, 1906
    Scaridea leucotaeniata Fowler, 1944
    Scarus bipallidus (Smith, 1956)
    Scarus celebicus Bleeker, 1854
    Scarus erythrodon Valenciennes, 1840
    Scarus gymnognathos Bleeker, 1853
    Scarus margaritus (Cartier, 1874)
    Scarus nigricans Valenciennes, 1840
    Scarus purpureus Valenciennes, 1840
    Scarus sordidus Forsskål, 1775

Care

Bullethead Parrotfish require large, well-established aquariums with plenty of live rock to graze on and space to swim. They are not suitable for small or nano tanks due to their size and activity level. These fish are known to be robust and can adapt to a variety of tank conditions, but they do best in environments that closely mimic their natural reef habitats.

It's important to note that parrotfish produce a significant amount of waste, so efficient filtration and regular water changes are essential to maintain water quality. Additionally, they are known to nibble on stony and soft corals, so they may not be the best choice for a reef tank with a focus on coral diversity.

Reproduction

In the wild, Chlorurus sordidus exhibits complex social and reproductive behaviors, including haremic structures where a dominant male controls a group of females. They are protogynous hermaphrodites, meaning they are born female and have the ability to change to male later in life, usually when they reach a certain size or in the absence of a dominant male.

Breeding Bullethead Parrotfish in captivity is challenging and rarely achieved by hobbyists due to their complex life cycle and social dynamics.

Habitat

Bullethead Parrotfish are found in a variety of reef environments, from shallow lagoons to deeper outer reefs. They are widely distributed across the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific Ocean. They play a vital role in their ecosystems and are often seen actively grazing throughout the day.