Idiosepius minimus is a species of bobtail squid native to the "coast of Africa"[3] where it occurs in shallow, inshore waters.

As a result it has been inferred that this species has a relatively restricted distribution since Idiosepius has not been recorded elsewhere in Africa.

The dwarf squids in the Idiosepiidae possess a glue gland on the dorsal surface of the body which they can use to adhere vegetation and other submerged objects.

These small squid are typically predators of crustaceans, the females stick their eggs onto seaweed or seagrass blades and their life cycle is thought to include a pelagic planktonic stage.

The type specimen was originally deposited at the Muséum National d'Histoire Naturelle in Paris, but is no longer extant.