Melanopsis brevicula is a small species of gastropod endemic to small streams near Agourai, Morocco.

It is distinctive due to its minute size, flattened sculpture, low spire, and small aperture.

It is known from a single location 10 km2 in area (Oued Ain Maarouf)[2] which has been well surveyed, and found to be threatened by increasing human population, droughts of increasing extremity, water diversion, and pastoralization.

Shell collecting presents a minor threat to populations.

The species has been classified as Critically endangered by the IUCN.