Pseudoliparis amblystomopsis, or the hadal snailfish, is a species of snailfish from the hadal zone of the Northwest Pacific Ocean, including the Kuril–Kamchatka and Japan Trenches.

The snailfishes or sea snails, are a family of marine ray-finned fishes. These fishes make up the Liparidae, a family classified within the order Scorpaeniformes.