Thanks for your inquiry tornfins.
I was never privy to the specific river from which they were collected.
I asked several times, but this question was not answered-directly. For that reason, I never could pin a specific collection point on them. Had I known, I would have gladly provided that info.
I believe I mentioned in the thread when announcing the arrival of wild umbies that I've been trying to have fisherman specifically collect this species for a long, long time.
Most of us that have been seriously interested in these fish over the years are aware that baby umbies have arrived as 'contaminants' in boxes of wild red hump Geos (Geophagus steindachneri). The Geos are collected commercially in and around the Rio Magdalena.
One would assume that where there's babies, there will be adults in the same river(s). It never worked that way in terms of collection though.
As I asked again and again of my shippers to urge fisherman to collect wild umbies, I was told basically the same thing in the end. The fisherman know the fish. They can be found in rivers in western Colombia, but those areas were (and still are) occupied, more or less, by guerilla troops. Bottom line - the fisherman were not interested in risking their lives to collect fish for some gringo customer up north.
I can add a last piece of commentary on this subject if you're still interested. It may very well have been in the best interest of the shipper to purposely not share me with the name of the river the fish were collected from. Think about it.
One-he knew that I deal with other Colombian exporters. What's to prevent another exporter from sending fisherman to a known location on a river?
Two, and in response to the above question, armed guerillas are what's to stop fisherman from trespassing on guarded land.
Furthermore, if the exporter made some arrangements to allow fisherman to access these areas, then one can expect this endeavor to be of personal interest both politically as well as for business opportunity.
Comprende?