The term "pilot fish" refers to a type of fish that is often seen swimming alongside larger sea creatures, such as sharks or rays. The pilot fish is thought to act as a guide or protector for these animals, as well as to feed on scraps from their meals. Synonyms for pilot fish might include "companion fish," "escort fish," or "follower fish," all of which suggest a similar role and behavior. Other possible synonyms might include "parasitic fish," "symbiotic fish," or "cooperative fish," depending on the context and emphasis of the description.