Can be tamed.
Located in Ashen Strand, Nazjatar. Alliance hunters can tame Wrinklefin in the usual way, but it is friendly to Horde and can only be tamed by Horde hunters using the toy "N'lyeth, Sliver of N'Zoth" while in War Mode. This fathom ray is a faction hub NPC and probably shouldn't be tameable anyway. Also of note, its title, "Droobie's Companion" is incorrect, as it belongs to Dren Nautilin.