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Effects on Aquatic OrganismsCopper sulfate is very toxic to fish. Its toxicity to fish varies with the species and the physical and chemical characteristics of the water (12). Even at recommended rates of application, this material may be poisonous to trout and other fish, especially in soft or acid waters. Its toxicity to fish generally decreases as water hardness increases. Fish eggs are more resistant than young fish fry to the toxic effects of copper sulfate (3). Very small amounts of this material can have damaging effects on fish. Permits are being required in some situations for application of copper sulfate to water bodies. Further field studies have been required by the EPA (16). Direct application of copper sulfate to water may cause a significant decrease in populations of aquatic invertebrates, plants and fish (17). Effects on Aquatic OrganismsHello I just edited this answer Copper sulfate is very toxic to fish. Its toxicity to fish varies with the species and the physical and chemical characteristics of the water (12). Even at recommended rates of application, this material may be poisonous to trout and other fish, especially in soft or acid waters. Its toxicity to fish generally decreases as water hardness increases. Fish eggs are more resistant than young fish fry to the toxic effects of copper sulfate (3). Very small amounts of this material can have damaging effects on fish. Permits are being required in some situations for application of copper sulfate to water bodies. Further field studies have been required by the EPA (16). Direct application of copper sulfate to water may cause a significant decrease in populations of aquatic invertebrates, plants and fish (17).
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Does it hurt when a fish gets a hook in it's mouth?

Yes, it can be painful for a fish to get a hook in its mouth. The hook can cause injury and distress to the fish, and if not handled properly, it can result in further harm or stress to the fish. Anglers strive to minimize harm by using barbless hooks and practicing proper catch-and-release techniques.


Is it safe to eat Atlantic salmon every day?

It probably is safe, as eating fish every day, in moderate portions shouldn't do a person any harm. There are people who do eat salmon every day, and it doesn't harm them.


Can fish eat maggots?

Yes, some fish can eat maggots as they are a good source of protein. However, it is important to ensure that the maggots are from a clean source and free from any harmful chemicals or bacteria as this could potentially harm the fish.


Can you punch a fish to death?

It is not recommended to physically harm animals in any way. Fish are living beings that should be treated with respect and care. If you have a concern about a fish, the best course of action is to seek help from a professional who can provide guidance on how to address the issue in a humane manner.


Can divers by petting fish kill them by rubbing off the mucous coating protection on fish?

Yes, petting fish can potentially harm them by removing their protective mucous coating. This coating helps fish regulate their water intake, protect against toxins, and defend against pathogens. Additionally, touching fish can also introduce bacteria or other harmful substances from human hands.