The term fish kill is applied to a localized die-off of fish populations which may also be associated with more generalised mortality of aquatic life. It may result from a variety of causes including drought, disease, oil or chemical spill, hazardous waste spills, ecological hypoxia caused by sewage or organic matter such as leachate or silage liquor, algae blooms, seaquakes, unusual weather conditions, inappropriate re-stocking of fish, underwater explosions, and other catastrophic events that can perturb a normally stable aquatic population.
Fish kills are often the first visible signs of pollution events and are usually investigated as a matter of urgency by Environmental protection bodies.
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Red tide outbreak and fish kill |
  | Red tide outbreak and fish kill - Stock footage; Red tide outbreak and fish kill |
| | Fish kill - Fish kill - Plant Management in Florida Waters |
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