Cardiosporidium
Like other members of this phylum it possesses apicoplasts, rhoptry and subpellicular microtubules.This Apicomplexan parasite is occasionally itself "parasitised" by an alphaproteobacteria from the order Rickettsiales.Technically speaking, it may actually act more as a mutualualist-symbiont or a commensal-symbiont rather than a parasitic-symbiont.It synthesizes the essential metabolites Lysine and lipoic acid, which likely benefits the holobiont: These apicomplexan hosts bearing this endo-symbiotic bacterium may benefit from the supply of extra nutrients.They are found in Narraganset Bay Rhode Island and in the Gulf of Naples.