Fish-like is an adjective that describes something that looks or behaves similar to a fish. There are several synonyms for the word "fish-like" that can be used to provide a more vivid description of the object or creature. For instance, "ichthyic" is an adjective meaning "of or relating to fish." "Aquatic" refers to something or someone that lives or grows in water, while "finned" suggests the presence of fins such as that of a fish. "Gill-bearing" can denote an organism possessing gills similar to a fish, and "scaled" implies the presence of scales. "Streamlined" can be used to describe the shape of an object that resembles that of a fish.