These small aggressive creatures live in a symbiotic relationship with the Titan Holefish. Towards the posterior end, the red flesh near the caudal fin transitions to black, then transitions again to blue. Four pairs of small, translucent black spikes protrude from the body on the dorsal and ventral side. The posterior region from the red fins down is drastically different from the anterior part, being composed of a red, translucent tissue through which the ribs and spinal column are visible. Three slim red fins protrude from just behind this region, each tapering to a point and situated at 120 degree intervals.
The anterior region features a sharp black beak and a pair of orange eyes with black, horizontal pupils. The Symbiote's body is small, and is divided into two distinct parts: the short but wide anterior region and the long, thin translucent posterior region.
