Fish Kill

The term fish kill, known also as fish die-off and (in Britain) as fish mortality, is a localized die-off of fish populations which may also be associated with more generalized mortality of aquatic life. The most common cause is reduced oxygen in the water, which in turn may be due to factors such as drought, algae bloom, overpopulation, or a sustained increase in water temperature. Infectious diseases and parasites can also lead to fish kill. Toxicity is a real but far less common cause of fish kill.

Fish kills are often the first visible signs of environmental stress and are usually investigated as a matter of urgency by environmental agencies to determine the cause of the kill. Many fish species have a relatively low tolerance of variations in environmental conditions and their death is often a potent indicator of problems in their environment that may be affecting other animals and plants and may have a direct impact on other uses of the water such as for drinking water production. Pollution events may affect fish species and fish age classes in different ways. If it is a cold-related fish kill, juvenile fish and/or species that are not cold-tolerant may be selectively affected. If toxicity is the cause, species are more generally affected and the event may include amphibians and shellfish as well. A reduction in dissolved oxygen may affect larger specimens more than smaller fish as these may be able to access oxygen richer water at the surface, at least for a short time.

Read more about Fish Kill:  Causes, Estimation, Prevention and Investigation, Notable Events

Other articles related to "fish, fish kill":

Consol Energy - Corporate Responsibility - Environmental Record
... In September 2009, several thousand fish were killed in Dunkard Creek, Monongalia County, West Virginia ... While state officials attributed the fish kill to a golden algae bloom, an investigation by the Environmental Protection Agency claimed that mining discharges from Consol Energy’s Blacksville No ... After halting operations at the mine following the fish kill, Consol was allowed to continue mining operations after coming to an agreement with the West Virginia Department of ...
Taal Lake - Ecology - Fish Kill
... On January 5, 2008, the Bureau of Fisheries and Aquatic Resources announced that a fish kill at Taal Lake (January 2 to 4) caused the 50 metric tons or ₱ 3.25-million (US$1=₱41) loss of cultured tilapia in the ... and Aquatic Resources announced a fish kill of 750 metric tons ...
Lake Buhi - Fish Kill
... On September 22, 2007, a fish kill in Camarines Sur's Lake Buhi threatened the livelihood of local fishermen ...
Fish Kill - Notable Events
... They tend to be underestimates, and may omit, for example, small fish, those removed by scavengers and those that settle to the bottom ... salmon, trout Extreme drought left fish stranded in stagnant pools into which sewers drained ... May be linked to volcanic activity and large fish farms Liuxihe River Guangzhou People's Republic of China 00010000 ... !10,000 carp Unknown Beaches at Thanet, Kent, England 2010 01 ...

Famous quotes containing the words kill and/or fish:

    Scandal is an importunate wasp, against which we must make no movement unless we are quite sure that we can kill it; otherwise it will return to the attack more furious than ever.
    —Sébastien-Roch Nicolas De Chamfort (1741–1794)

    In communist society, where nobody has one exclusive sphere of activity but each can become accomplished in any branch he wishes, society regulates the general production and thus makes it possible for me to do one thing today and another tomorrow, to hunt in the morning, fish in the afternoon, rear cattle in the evening, criticize after dinner, just as I have a mind, without ever becoming hunter, fisherman, shepherd or critic.
    Karl Marx (1818–1883)