A second lineage of amphibious snarks native to Serinarcta, these are totally unrelated to the gups of the southern continent, having evolved from a lineage of amphibious, freshwater spikerays capable of breathing air, although they re evolutionarily more akin to mudskippers than true amphibians, but are nonetheless able to thrive in the warm and humid global climate of the hothouse.
The back fins of the spikeray turned into muscular forelimbs capable of dragging them on land, while the paired tail fins act as crude feet to give them stability and further maneuverability on land. Although not quick while walking, they retain the stinger-like spikes of their fully aquatic ancestors with which to defend themselves.