Ethereal Mana Ray

There is one tameable creature with this look.

Ethereal Mana Ray
Can Be Tamed
52-60Shattered Grove
Shattered Grove is actually another realm, but can be reached through the Maldraxxus quest Working For The Living. It's possible that this realm is only accessible via that quest.
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.