Are any of the creatures in hydrothermal vents able to breathe?

This is much simpler than it might appear, in that ALL life forms "breathe" in one manner or another..that is, extracting gas molecules from their surrounding environment, be that aqueous or gaseous, which then fuel metabolic life processes. Those living in hydrothermal vents are generally termed "xenophobes", since their life environment is so extreme, compared to what we accept as "normal", that these lifeforms seem "alien" to the general populace.