A man who used Vegemite to paint a mural on the Fremantle Train Station is set to cop a fine for his bizarre efforts.

The man was painting an arch bridge on the wall of the station when he was stopped by Public Transport Authority officers about 6.30pm yesterday.

A PTA spokeswoman said the man verbally abused officers when they confronted him over the vandalism.

He was cautioned and sent home on a train.

The spokeswoman said the man was set to cop a $200 infringement for the damage in the mail.

Fremantle resident James Wagner, who took the photo of the edible artwork, said he was dropping his girlfriend at the station when he saw a dispute between the artist and the transit guards underway.

He heard lots of shouting and the artist say “it’s only f***ing vegemite”.

The man was arrested and marched into the station, where he continued to scream and shout, Mr Wagner said.

Mr Wagner believed the artwork was a reflection of the Fremantle harbour and a ship under the bridge.

“I’ve never seen anyone use vegemite to draw with before,” he said.

“That’s why I put it on Facebook - it’s like the most Australian thing you can get.

“I think it’s pretty good actually.

“It’s very Freo - there is a lot of art in town.”

Mr Wagner said comments on his photo were generally positive, with people not too fazed about the use of vegemite as medium, believing the rain would wash it away.

The man’s unique drawing has caught the attention of social media users who have described it as the most Australian piece of graffiti they’d seen.

“You can’t get anymore Aussie than that,” wrote one Facebook user.

“Freo should owe him money for his awesome art. That s--ts gotten expensive!” another social media user.

The man’s efforts are not expected to last long, with up to 24mm of rain forecast this weekend.