you die
eutrophicationeutrophicationFertilizer in a lake helps algae grow. Up to a certain point, that is good. The algae turns carbon dioxide into oxygen and adds oxygen to the water. However, after that point, the algae covers the lake. Oxygen from the air can not get to deeper water. Dead algae falls to the bottom of the lake and decomposes. The process of decomposing uses up oxygen. The amount of oxygen in the lake drops below the point where fish can survive. Thus, over fertilization leads to a fish kill.
absoulutley not the fish would die soon after you put it in and it might die that day.
Unless it is a saltwater or very brackish lake, the fish will die. Most saltwater fish cannot survive in fresh water and vice versa.
they will all die (or get cooked)
they will all die (or get cooked)
Respiration. Also, if the fish die, they slowly return the nitrogen to the air.
so the fish and other animals don't die
The enzymes that are needed for important reactions in the body do not work as well below 35.5 degrees celcius.
invasive species
Fish in a lake where lightning strikes may experience shock or minor injuries, but they are unlikely to die because the electric current tends to dissipate quickly in water. Fish are well insulated due to the water's high resistance to electricity, so the effects are usually minimal.
Koi Carp (Cyprinus carpio) and any other fish will omit toxic waste when they die and decompose. In a small pond, the build up of such waste will have more affect on other fish, than in a large lake.