If the question is referring to a dream about a dead person and a dead fish, it could mean that the dreamer is feeling rather hopeless. Beyond that general suggestion, the dream's meaning would depend on who the dead person is and what relationship they have to the dreamer.
what do it mean when you find a dead fish in your car
This happens when the fish is dead or dying.
Leaving a dead fish on someone's doorstep is a warning that they are going to be killed.
When someone puts a dead fish in your mailbox, it means that somebody wants you dead.
It means you smell dead fish. It doesn't mean anything at all! Why would you think it smelt like something! Ha! you're weird!
it's dead
An animal that eats dead or rotting meat such as a Vulture.
Someone from the mafia wants you dead
when a person is dead.
fish mean fertility
If someone is throwing dead fish in your yard, it means that whoever did it should be charged with illegal dumping of a dead animal. The police should be called.
A fish monger is a person who sells fish.