It's thought the arrangement helps both creatures - with the fish finding the prey, before calling on the octopus to capture it.

Some members of an octopus species hunt cooperatively in groups with fish, a new study found — an indication that some octopuses have richer social lives than scientists understood.

An octopus patrols a shallow reef, searching for food–and it’s not alone. A flurry of fish move alongside it, in a group hunting phenomenon observed in multiple marine locations around the world. Scientists have known that octopuses are smart;

Octopuses and fish are routinely seen working together on the ocean floor, and now scientists say that the cephalopods are the leaders of the pack.