Littoral Cusk
Monothrix polylepis
- Least concern
- Card rarity: Common
- Fish

The Littoral cusk is a species of viviparous brotula known from shallow reefs off the coast of eastern Australia. This species grows to a length of 5 centimetres (2.0 in) SL. This is currently the only known species in its genus.
Classification
- Class
- Actinopterygii
- Order
- Ophidiiformes
- Family
- Dinematichthyidae
- Genus
- Monothrix