"To be able to say to them you are the best of the best, we're the producers of the year for Australia, for the team, it's been amazing,"Ms Zipf said.
"I thought we were kidding ourselves to be able to grow the fish in lakes like this,"he said.
"The first year, we grew about 25 tonnes, but this year we'll do 100 tonne and next year we should double that,"Mr Cherrie said.
"Nine out of 10 people just would have walked away and not done what we've done, but Serena is truly tenacious. Once she gets something in her head, she'll see it through,"Mr Cherrie said.