Can Remember Whole Neighborhoods
Fish can also remember complex location information by creating something called a cognitive map. It’s kind of like the map of your neighborhood you have in your head.
For frillfin gobies that live in tide pools in the Caribbean, having a good mental map is a matter of life and death. When scared, these gobies will leap out of their home pool into a neighboring one. So they have to know where those neighboring pools are, otherwise they’ll end up on the rocks—and become a tasty sea gull snack.