Fade entities

Fade entities are spectral beings, which go through the astral sea. To some people, they are always visible.

Appearance
Fade entities often look like regular creatures, but in strange colors and with magical glows to them. They may become visible when one uses a potion that allows them to see magic. These beings acknowledge human movements, and move to avoid them.

In Chapter 63, the Fade entities seen include spectral fish and a spectral glowing serpent.