Retains its original name after taming. 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.
Level scaling: 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.