Its best as livestock. It produces a large amount of poop, especially when forcefed stimberries, and it provides a lot of meat, plus their breeding time is pretty decent.
Tame ten of these phimomias and tame ten dung beetles. Force feed stim berries to phiomia and put dung beetles on wander. Load up the beetles with poop and BOOM infinite fertilizer and oil.
Feed them stimberries. Then get a mop. Do NOT bring them inside your freshly crafted tek base. I learned this the hard way. Over 300 medium animal crap.