"If I hadn't told anyone that it was actually carp, they wouldn't have had any idea."

Mr Best said he was pleased to see plates wiped clean.

"Usually, they're either knocking the fish on the head and throwing them on the bank or putting them in yabby traps or turning them into fertiliser," he said.

"I wanted to show that there's this valuable opportunity right on their doorstep. And they absolutely loved that."