Aeliudas iscariota
This algae is descended from Algearous redensis and lives within zone 24. This species, however, differs from others in that it is a parasite and a predator to other algae. By default, A. iscariota colonies exist in very small ball colonies being mostly dormant (to help survival while drifting in the cold depths). In this state, the colony absorbs and eats various floating biofilms and other minerals. It stays in this form until the colony runs into a large algae colony of another species. At this point, the colony will latch on and incorporate itself into the other algae, slowly eating and spreading across the colony. The invading algae possesses a crimson coloration, and spreads in a vein-like or tendril-esque pattern. Infected algae colonies aren't necessarily locked in an inevitable fate. This algae is fairly vulnerable to extreme temperatures (preventing it from accessing plants right up against hydrothermic vents), sudden temperature changes, and intense lights.