White & Pink Mana Ray

There is one tameable creature with this look.

White & Pink Mana Ray
Can Be Tamed
Seems to be an infrequent spawn in areas where Umbralfins occur. If you can't find one, try killing the Umbralfins.
Level scaling: In Shadowlands most NPCs will scale with the Hunter's level, within the constraints of their level range. Hunters can tame regular NPCs up to 2 levels higher than them, but can only tame elite NPCs of the hunter's level or below.