I don’t know why Tapajos are less sensitive to HITH even though other Geos from Amazon Basin are, just like why some Oscar don’t get HITH and others do, being kept in the same tap water. But less sensitive does not mean unsusceptible, just less susceptible. African and CAs are immune to HITH, even though the same pathogens can cause bloat. I have no experience with adult Tapajos because the last group of Tapajos juvies I raised died young, probably from bloat, and they were too small to manifest HITH even if they had it. I much prefer my fish to die quickly from diseases than to carry disfiguring HITH that can’t be cured and don’t kill them.


