We know very little about the behaviour of these animals.
During their attached phase they are permanently glued to the surface of their crustacean host, but these hosts regularly moult their external covering. So, unless the parasite suppresses moulting in the host, development from infective larva to adult must take place between successive moults of the host.
There is no information available on the pathogenic effects of the tantulocaridan on its host.
Little is known about the populations of either the deep sea tanaid host or its tantulocaridan parasite. There is probably no immediate threat, but parasites in general are rarely accorded any conservation status.