Gunther’s Wrasse

Interesting Info

• Gunther’s Wrasse lives along Australia’s east coast, especially in Queensland and the southern Great Barrier Reef, where it prefers rocky reefs and coral slopes.
• Adults show striking colours with a blue-green body, a pink to reddish head, and a bright yellow tail. These colours become even more vivid during courtship or when the fish is excited, but they can fade when the fish is resting or stressed.
• This wrasse feeds on small crustaceans, molluscs, worms, and other invertebrates that it plucks from rocks and coral crevices on the reef.
• Its strong jaws and sharp teeth make it capable of crushing hard-shelled snails and crabs, giving it access to prey that many other fish cannot eat.
• Gunther’s Wrasse often forages in small groups and sometimes mingles with other wrasse species while feeding, creating colourful mixed schools.
• Like many wrasses, they are sequential hermaphrodites. Most begin life as females and some later transform into brightly coloured males that take over territories and court females.
• Spawning usually occurs from late winter to spring, with the peak in September. Males show off their glowing colours, flare their fins, and perform quick head-shaking movements to attract females.
• In the wild they can live for as long as 15 years, which is relatively long for a reef fish of their size.
• Juveniles look very different to adults and are usually plainer green or brown with faint markings, which helps them blend in with algae and rubble until they are big enough to join adult groups.
• They play an important role in reef ecosystems by controlling populations of small invertebrates, helping to keep the reef balanced and healthy.
• Divers and snorkellers often spot them around reef slopes and rocky drop-offs, where their bold colours stand out vividly against the coral backdrop.
• At night they retreat into reef crevices to rest safely out of sight from predators, only emerging again once daylight returns.
• They are quick and curious swimmers, often darting between coral heads, and sometimes follow divers briefly before slipping back into the reef.