Blue marron crayfish is a low-maintenance native pet and demand is going ‘through the roof’ worldwide

Dr. Dulana Herath from PASES Aqua Pty Ltd had a chat with ABC news regarding the increasing demand for Electric Blue Marron to keep as pets.

They won’t fetch the newspaper or cuddle you on the couch at the end of a long day, but pet owners are shelling out record dollars for ornamental blue marron during the COVID-19 pandemic.

Key points:

  • Blue marron is becoming increasingly popular as an ornamental pet and can sell for up to $250
  • Producers say they are receiving more enquiries than ever during the COVID-19 pandemic about the spider-like freshwater crayfish
  • Industry estimates just 1 tonne of the rare electric blue crustacean is produced in WA each year

The freshwater crayfish species can range in colour from jet-black to brown, striped and red, but it is cobalt blue marron that is becoming increasingly popular as showpieces in aquariums across Australia and the world.

Peter McGinty is a marron producer based in Manjimup in West Australia’s south-west, about three hours south of Perth. He said he has received an unprecedented number of inquiries for the eye-catching, electric-blue crustacean since the start of the global health crisis.

“They look absolutely amazing in an aquarium,”.

Mr McGinty

“The demand is exceptional from all around the world and has gone through the roof.

Mr McGinty
Peter McGinty says he has received more inquiries than ever for blue marron during COVID-19.(ABC Rural: Jessica Hayes)

“Since the pandemic started and people are at home, there’s been a renewed interest in pets, especially those that you don’t have to tend to all day long.

Mr McGinty

“We’ve seen particular interest out of Victoria, where they’re not actually allowed to be kept because they’re prohibited due to potential competition with the Murray crayfish.”

Mr McGinty

Demand ‘exceptional’

Industry estimates about 1 tonne of blue marron is produced annually, and accounts for just a fraction of the near 80t of all marron produced annually.

Marron is endemic between Harvey and Albany in WA’s south-west and is under threat due to destruction of riverbank vegetation, rising salinity, climate change and reduced river flow. According to the Department of Primary Industries and Regional Development, a variety of factors affect marron colouration including genetics and diet.

image 2023 05 06 124108063
Blue marron can fetch up to three times the price of a standard black marron.(Supplied: Andrew Dempster)

“Because of the lack of volume, they’re commanding very high prices,”.

Mr McGinty

“[Blue marron is] quite rare, so the prices we fetch are generally double if not triple the price of a standard black marron.

Mr McGinty

“It’s even treated differently from black marron, even in the export documentation, where there’s a different set of rules if you’re exporting for the aquarium trade as opposed to the food industry.”

Mr McGinty

An ‘interactive’ pet’

Dulana Herath is an aquatic biologist who also sells blue marron in the domestic market and says a fully grown female can sell for up to $250, depending on its size.

“There is huge demand. We get emails just about every day and there’s just not enough producers of blue marron,”.

Dulana Herath

“We’ve had inquiries from all over the world during the pandemic, including from the US, Europe and China.”

Dulana Herath

Mr Herath says blue marron is considered lucky in some South-East Asian countries, which is driving demand, but there is also increased interest from within WA.

“Marron are pretty attractive, they move like spiders and they’re very interactive,”.

Dulana Herath

“And because it’s a WA native, a lot of people locally are trying them as pets.”

Dulana Herath

This article was originally featured on


About the Author

Picture of Dr. Dulana Herath (or Dean)<br/><small>Managing Director / Biologist Phd, Bsc, Certs</small>

Dr. Dulana Herath (or Dean)
Managing Director / Biologist Phd, Bsc, Certs

Dr. Herath runs the overall business and is mainly involved in larger projects, consulting, training and mentoring staff. He has a PhD in Biology and has a track record of academic publications at Curtin University of Technology, but soon discovered that running a business related to his field was his true passion. Dulana has diverse knowledge in a range of biological disciplines, and is extremely passionate about creating and restoring aquatic ecosystems, designing natural pools and ponds, and promoting native fish-keeping which he has specialised in his pond shop in Cockburn Central.

View All Posts