Paraliparis em, the sleek snailfish, is a species of Liparidae (or snailfish) discovered in the eastern Pacific Ocean.
Paraliparis em lacks a ventral suction disk, which fish in the Careproctus genus are known to have. This is one of the reasons it is placed in the paraliparis genus.'
The species was discovered over 13,000 feet underwater between 180 and 190 miles off the coast.
The fish was discovered by the Monterey Bay Aquarium Research Institute. Careproctus yanceyi was also discovered.