Fishies! Pedognaths are partially cartilaginous vertebrates native to ECCO-1 c. They have four compound eyes, three to four tentacles as mouth parts, a head shield, and their gills are contained beneath armored structures. They possess four bony fins, and in some groups, these fins are held above the body and serve as jury-rigged dorsal fins. They're among the oldest basal groups of "fishes" on the planet and serve as a native staple. Osteocephalids still have the cranial plate, and in some cases, have large, pronounced plates that interfere with the function of eyes.
Animalia -> Neochordata -> Craniogregariata -> Pseudovertebra -> Pedognathia -> Osteocephale
In Osteocephale, some of the head shields become so large and interfere enough with the eyes that they lose the function of their upper set completely, which begins the migration of eyes upwards, which causes them to enter the order Biclopsidae, while the remaining are split among several other families.
Pedognaths of all shapes and sizes are important food staples for the locals, considering that they combine the best aspects of fish and shrimp meat into one animal.