Which one to choose between fish head and human head or fish tail and human head?

You can choose both.

1. The image of human head with human head and fish tail has a mysterious and supernatural color. It is often used to describe creatures with divine power or huge energy, leaving a deep impression on people.

2. The images of fish heads and human heads and fish tails are also interesting to a certain extent. They look very strange and fun, and can easily arouse the curiosity and interest of the audience.

3. In literature, movies, games and other art forms, the images of fish heads and human heads and fish tails and human heads can be given different meanings and roles, such as kind mermaids, vicious sirens, The mythical sea gods and so on greatly enrich the content of the work. The choice of images such as fish-headed human heads and fish-tailed human heads depends on the effect the creator is pursuing and the theme of expression. Whether it is mysterious, interesting, subversive or other aspects, they all need to be used reasonably and in line with the overall style and temperament of the creation.