Best answer
In a fish kill that is a result of pesticide exposure,the smaller fish will die off first,unlike the larger fish in a dissolved oxygen (DO) kill. A pesticide-related fish kill can occur any time of the day,and the water will appear to be normal in color with no unusual odor.
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How do pesticides affect fish?
Pesticides and heavy metals that enter waterways can also harm or kill fish. Synthetic pesticides used for weed and bug control are toxic in even small amounts. Heavy metals created when fossil fuels are burned enter the atmosphere, eventually making their way into bodies of water.
What kills fish in waterways?
Pesticides and heavy metals that enter waterways can also harm or kill fish. Synthetic pesticides used for weed and bug control are toxic in even small amounts.
Do herbicides kill fish in lakes?
Herbicides often are directly applied to lakes and ponds to control nuisance growth of algae water plants (water lily, spatterdock , duckweed ), and emergent water plants (cattails, rushes, ree ds). Concerning the not directly to fish. Fish die indirectly from suffocation, rather than herbicide poisoning, because masses of rotting water
What are the most toxic pesticides to fish?
Different types of pesticides are used in agriculture, but their toxicity to fishes varies with each pesticide type and insecticides are typically the most toxic [1, 2]. The major insecticides that are usually used are organophosphate, organochlorine, carbamates, pyrethroids and necotenoides [1,3]. …