West Coast Fish and Game have come to the aid of the Paringa Salmon Farm and cafe, which lost as many as 13,000 salmon after intruders tampered with the water supply.
Fish and Game ranger Dean Kelly said today the group had made available its fish transporter and they had also managed to source some replacement stock.
Mr Kelly was at a loss to understand why someone would do such a thing.
"I question the mentality of people who would do something like this."
The "lowlifes" had destroyed the Paringa Salmon Farm and Cafe's entire year's stock of fish.
Mr Kelly said the cafe had been extremely generous over the past few years in "rearing-on" excess stock for release into the wild to enhance the West Coast's salmon fisheries.