Undermoth

Found mine at Rak-Ush /way 74.16, 83.54.

Maddening Deeps back line pet for the oozes in the area (needs to get the buff to be able to see the oozes). I've managed to find a rare B/B as backline from an ooze (went there for farm for oozes and got myself lucky).

Caught one today in Azj-Kahet Maddening Deeps as backline pet to a Shadowy Oozeling. It was a grey BB, so blue aren't guaranteed. Whether it was nerfed or I was just unlucky, I can't say--it's the only one I've seen so far.

Fought it as a main pet and twice as a back up pet around the Silken Ward, Rak Ush, and Wild Camp Ul'ar areas.  As noted in other posts, it's always been blue and B/B.  Back up pet to Vibrant Glowfly and to Verdant Scootiefish

Found it as a backline pet in Azj-Kahet at 74.18, 82.15. It doesn't appear to be on the safari list for wild pets. Also as a back line pet to Vibrant Glowly at 74.95, 78.46 (Azj-Kahet).