In response to neighbors’ complaints about strong odors due to the mortality of fish, the team of “Los Carpinchos” carried out the cleaning of the Negro River channel that runs through the city of Resistencia, in the Villa Ávalos area last Tuesday.
In this context, Rito Prado, head of the Department in charge of “Los Carpinchos,” said: “We came to clean this area because there were many rotten fish; now it is clean, but there is a very strong odor of decay that doesn’t go away.”
Los Carpinchos are at the forefront of the fight to keep the water mirrors in the city in good condition, and this case was no exception, after a higher than usual fish mortality phenomenon was confirmed.
In response, municipal teams were activated, and the intervention of competent organisms was requested to control the growing number of dead fish.
## Immediate Actions
Officials from the Subsecretariats of Environmental Management and Water Systems carried out inspections in the affected areas. Dead fish and excessive growth of aquatic vegetation in the river were detected.
In the absence of evidence of industrial or sewage contamination, the collaboration of the Provincial Water Administration (APA) was requested to monitor and analyze water quality. The APA committed to investigating possible causes and carrying out thorough monitoring.
In addition, the Subsecretariat of the Environment and the Provincial Fauna Directorate were called upon to evaluate the environmental impact.
## Key Factors and Context
Possible causes: Experts point out climatic factors such as low water oxygenation and scarce rainfall as possible causes.
Interjurisdictional nature: According to the Provincial Water Code, management and mitigation depend on provincial entities due to the river’s interjurisdictional nature.
## Fish Mortality: a Recurrent Phenomenon
This is not the first fish mortality event in the Negro River, highlighting the need for preventive management.
Water quality monitoring will continue in the coming days to determine more precisely the factors that may have influenced this new episode of massive fish mortality.
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