Oxygen-starved Murray crayfish returned to the river revitalised after 'spa' experience in NSW RiverinaHundreds of flood-affected Murray crayfish have undergone a Cinderella-like transformation after being rehabilitated in the New South Wales Riverina.Key points:- Nearly 1,000 Murray crayfish were rescued from oxygen-starved floodwaters in the Murray River five weeks ago- Hundreds of the crays were kept at the Narrandera Fisheries Centre- The crays returned to the wild last week, completely transformed after their "spa" like experienceFive weeks ago, nearly 1,000 of the crays were rescued from the Murray River by NSW Department of Primary Industries (DPI) officers, anglers, environmentalists and local residents.Staff at the Narrandera Fisheries Centre were tasked with providing the crays with lots of clean, highly oxygenated water to allow them to recuperate, along with a healthy diet of carrots, cucumbers, broccoli and cauliflower."When you catch them out of the river, they kind of look pretty grubby.They have algae and grim on them, but after spending five weeks in really clean, fresh water and being fed really well, they looked really clean," he said."