Dead Fish and Fish Kill
Dead fish and fish kill are caused by lack of oxygen, disease,
pollution, stress, toxic algae, pesticides, starvation, old age
and anoxic (no oxygen) water in storm drains that enters lakes,
ponds or reservoirs during heavy rain after long drought
periods. Lack of oxygen from a few feet below the surface to the
bottom may cause fish to only swim in the surface water. If the
surface water is warm, dead fish or a fish kill could be from
the warm water or from ammonia and carbon dioxide in the
bloodstream turning into gas bubbles. In most every case,
restoring the water body can prevent dead fish and fish kills.
Determining the cause of dead fish or a fish kill is many times
very difficult. Was it post spawning stress or a lack of oxygen?
In either case, the cause may be temporary, making the cause
difficult to detect. Rotting weeds or algae as a result of using
herbicides or algaecides can cause a temporary lack of oxygen
that is not discovered by later testing.
Dead fish or large fish kills are most often caused by a lack of
oxygen. This could be experienced in the middle of the night
when plant photosynthesis reverses and competes with the fish
for oxygen. Water is rarely tested for oxygen in the middle of
the night.
The best way to protect against dead fish or fish kills is to
ensure there is always enough oxygen present for a balanced
ecosystem. Oxygen not only keeps fish healthy, it keeps the
entire ecosystem healthy. The CLEAN-FLO Continuous Laminar Flow
Inversion and Oxygenation System provides consistent levels of
oxygen throughout the water at all times. Fish are not stressed
by a pre-spring or pre-fall turnover, or by photosynthesis. The
CLEAN-FLO system eliminates the cause of most dead fish or fish
kills while restoring
lakes,
ponds,
reservoirs or
rivers.
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Winter aeration with the CLEAN-FLO process prevents fish kills. |
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We strongly recommend a snow fence and open water signs be placed around the open water holes for safety purposes. |
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Keeping a small area open in the winter can inexpensively prevent
fish kills. |
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