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Common Aquatic Bacteria Responsible for Fish Kill
Test results from fish sampling suggest the recent Spofford Lake fish kill resulted from the presence of a common aquatic bacteria combined with a time of year when fish were stressed from spawning activity and war water temperatures.

Test results showed that no virus was present in the fish tested and that the bacteria found was Aeromonas Hydrophila. According to Fish Health Center Staff, this bacteria only becomes lethal to fish when there is another stressor to the fish. In some cases, the bacteria can infect a single fish and then multiply rapidly, causing a substantial fish kill.

Fish kills occur naturally in waterbodies from time to time, according to New Hampshire Fish and Game Department biologist, although they typically involve fewer fish.

 
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Aluminum Sulfate Traps Phosphorus in Sediment - On cranberry farms, most phosphorus is applied to bogs as fertilizer or is found naturally in irrigation pond water. At harvest time, farmers flood their bogs with water from those ponds to facilitate easy collection of the buoyant berries. Any excess phosphorus drains with the water out of the bogs after harvest.


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