Space Amoeba (Stellaris)

A nomadic space-borne species,the Space Amoebas are a species that are as dangerous as the Crystalline Entities.

These creatures resemble molluscoids and seem to move about space using the movement of their tentacles. The Amoebas travel in packs with a pack mother leading several juveniles and protecting several swarmlings (their young). They are known to attack ships if either they are provoked or come too near the pack. The adult space Amoebas can be either tamed or trained to fight for an empire and swarmlings can be trained as a temporary substitute for fighters. They have an internal organ that allows them to warp from system to system.