To be fair I do use convoluted terminology like "cephalic dehiscence" (two different independendly evolved structures functioning as mouths, since archaic matanu have a single shared oral-anal opening) and "opercular dehiscence" (the exit hole many lineages have developed to escape their false body, which they inhabit, much like how the distantly related kokunu have a true crystal body inside a false clay body). Ñejutë-Moritë, when separate mouths are present, have either a radial or vertical mouth. Lekïtea-Yaso-Maraso-Poteta have a horizontal mouth instead.

TLDR yeah that's a mouth. This character/species/genus in particular is a recycling of the "moon spirits" (Yasi/Jaci/the Moon being the house of the Sky Mistress, Wife of God, in Tupian faith) from back in 2009 when the canon's only resemblance to its current state was the presence of yahanu (a type of telinu) and the zalnathazo. I also jokingly call this species "messed up coelacanth" since a couple of people have likened it to a fish.