Common name: Globehead parrotfish

General information

The Blue-barred Parrotfish, scientifically known as Scarus globiceps, is a vibrant and colorful member of the parrotfish family. These fish are known for their ability to change colors and patterns throughout their life stages, which is a characteristic of the Scaridae family. Juveniles typically exhibit different coloration compared to adults, with males often displaying more vivid and complex patterns.

Parrotfish play a crucial role in the health of coral reefs by grazing on algae that can otherwise smother corals. Their beak-like teeth are perfectly adapted for scraping algae and dead coral, which they grind up with pharyngeal teeth to digest the algae and excrete the coral as fine sand.

Care

Blue-barred Parrotfish require large, well-established reef tanks with plenty of live rock for grazing and hiding. They are not the best choice for a reef tank with delicate corals, as they may inadvertently damage them while feeding. These fish are active swimmers and need ample space to roam, so a larger tank is necessary to accommodate their size and activity level.

A varied diet that includes algae and marine-based plant matter is essential for their health. Supplementing with high-quality commercial foods specifically formulated for herbivorous fish can also be beneficial.

Reproduction

In the wild, Scarus globiceps exhibits protogynous hermaphroditism, where individuals start life as females and some later transform into males. This change is often accompanied by a dramatic shift in coloration and size. Breeding them in captivity is challenging due to their complex life cycle and social structure.

Habitat

The Blue-barred Parrotfish is found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They are commonly seen in coral-rich areas of lagoons and seaward reefs, often in clear waters. These fish can be found at depths ranging from shallow waters to about 30 meters.

Their presence in an aquarium can be beneficial for controlling algae growth, but their natural behavior of scraping surfaces can pose a risk to certain coral species.