Onyx & Ruby Crab

There is one tameable creature with this look.

Onyx & Ruby Crab
Can Be Tamed
Retains its original name after taming.
This NPC may appear in a number of different locations within the zone, including Lemor'athra Spire (south-west edge, by a fallen tower), Coral Forest (south of Ekka's Hideaway), Elun'Alor Temple (in the building to the east, close to the Horde flightmaster Gizzik Kelpears), Ashen Strand (just north-west of the Horde Flight Point), Kal'methir, and Highborne Estates. It will randomly appear in one of five gemstone colours each time, and if you're unlucky it could take a while to find the look you're after. Fortunately it appears to spawn frequently.
Cannot Be Tamed
Island Expeditions (Scenario)
A possible encounter on any island, except maybe Crestfall and Snowblossom Village.
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.

Matching Companion Pets