Fish freezing to death in super-chilled water

Cooke Aquaculture’s fish farm in Shelburne Harbour on Nova Scotia’s South Shore is one of the sites where officials believe fish have died due to a so-called superchill. (The Canadian Press)

Sources indicate that temperatures have dropped so low in Nova Scotia waters that Fish at three aquaculture sites have died and a so-called super-chill is suspected, the provincial Department of Fisheries and Aquaculture said Tuesday.  A fish health veterinarian visited the Annapolis Basin and Shelburne Harbour sites and is expected to visit the Jordan Bay site in the next few days to investigate the cause of death, Fisheries and Aquaculture Minister Keith Colwell said in a statement. “Our provincial fish health veterinarians investigate mortality events to rule out diseases of concern,” he said. The department said a preliminary investigation has found a super-chill happened, meaning sustained cold temperatures dropped the temperature of the water to the level that fish blood freezes — around –0.7 C. FULL REPORT