This Victorian butterfly is critically endangered.

It lives in the narrow bands of remnant floodplains that border a handful of salt-lakes in the west of the state. The Golden-rayed Blue Butterfly feeds on only one species of plant, known commonly as Creeping Boobialla.

Major threats

Degraded habitat is the biggest threat to the survival of the Golden-rayed Blue Butterfly. Living in a restricted area doesn’t help its cause. Over time it has lost its marginal habitat around the salt-lakes, mainly through cropping and grazing.

The invasive paperbark tree is another problem as it displaces the butterfly’s food plant. This tree also reduces the sunny, open areas preferred by the adult butterfly.

The plan for fighting extinction

Zoos Victoria is conducting field surveys to better understand the threats to the Golden-rayed Blue Butterfly. We will also support its protection and restoration through land management and re-vegetation.

How you can help

  • Do what you can to create community awareness and support for the Golden-rayed Blue Butterfly. This includes visiting our zoos. By visiting Healesville Sanctuary, Melbourne Zoo or Werribee Open Range Zoo, you will be supporting our work to fight extinction.
  • Donate if you can. We're a not-for-profit organisation, and all donations go towards our important conservation efforts.
  • Discover more about local conservation events and join the growing number of wild activists taking action for local wildlife.

Photo: Kate Pearce

Population Trend:
Number left in the wild:

Conservation Status

  • LC
    Least Concern
  • NT
    Near Threatened
  • VU
  • EN
  • CR
    Critically Endangered
  • EW
    Extinct in the Wild
  • EX