>>...are you aware of any apistogramma that are endangered or threatened.<< I don't know enough about Apistos to answer that. But it does seem to me that the availability and general knowledge of Apistos has made some great strides in the last 3-5 years. Fish that have previously accepted as color morphs may end up being distinct enough to warrant being separate species or at least subspecies. Hence, practicing good husbandry and keeping distinct population separate (or at least identified a distinct populations vs. "sports"), may be important, even though the status in the wild is not fully known. Some folks are put off at first by the long complicated naming conventions that the killie folks use. But it doesn't take long to adapt. Plus there are some very positive benefits, like reduced infertility. Just my .02