Bloodworm
A bloodworm was a small, vermiform-like organism capable of directly entering the humanoid circulatory system. ()

In 2371, during an away mission to a planet in the Delta Quadrant, the crew of the  discovered indigenous bloodworms, which Neelix hoped to utilize in a tartar for the crew, an idea from which Commander Chakotay attempted to dissuade him. ()

Types of bloodworms
 Denobulan blood worm
 Regellian blood worm
 Regulan bloodworm

External link
 

de:Blutwurm
Foods
Animals