Druids can customize their Aquatic Form in Patch 10.2 and take on the form of a whiskerfish in Guardians of the Dream.
The customization option is learned via Scale of the Prismatic Whiskerfish, but the source of the glyph is currently unknown. We only have 1 tint currently tied to the model which may change with future 10.2 PTR builds. For now, here’s the whiskerfish!