Yes, fish Can communicate with humans!
Fish have been shown to be able to communicate with each other via certain body language and through the release of pheromones. They can also move around in a coordinated fashion due to being able to see one another. Scientists have yet been unable to confirm if fish can communicate with humans or not. Some have used studies of a fish’s brain as a basis to claim that they can. In those experiments, the scientists electrically stimulated certain regions in the fish’s brain and were able to see movements from specific parts of their body such as their gills.
In The Pearl by John Steinbeck, Kino is able to communicate with an octopus because of its similar nature. They both have a tough exterior and are able to defend themselves from anything that may come along, such as sharks. They also share the same concern for their children. The similarity between them shows that octopuses can get across what they’re trying to say, which is why Kino is able to talk with him. In the film Hitchhiker’s Guide to the Galaxy, fish travel with Arthur Dent and Ford Prefect in their escape from Earth after it has been destroyed by a Vogon constructor fleet. Not much has been discussed about this particular breed of fish, but it has been shown that they have a brain capable of communicating ideas and thoughts back and forth among other fish within that species.
They are also able to move around in a coordinated fashion, which could be why they are traveling along with Arthur Dent and Ford Prefect. The fish may have seen the escape pod being launched from Earth and decided to follow it.
The examples of octopuses being able to communicate with humans show that it is possible for fish to do so as well. Scientists have yet been unable to confirm if fish can communicate with humans or not due to their lack of evidence. Some scientists have used studies of a fish’s brain as a basis to claim that they are able to communicate because of brain regions that elicit certain movements when electrically stimulated. It has also been shown that fish are capable of coordinating among other members in their species, which could explain why fish are able to communicate with each other. The examples of fish being able to communicate with humans show that they can do so as well.