The premekoroach replaced its ancestor the walins. It has lost its fins completely and evolved legs. Now it walks on the sea floor and searches for corpses there. They still have the same reproductive ways as their ancestor before them. They shrank in size a little too, so they can't be spotted by predators so easily. The premekoroach has developed lesser sight, that way it can see the glowing trapinout and creatures that are infected whit macululuchia.