If I'm understanding correctly, Borneo is the Island, while Kalimantan is a region on the island.
The island is divided between Indonesia (Kalimantan districts), Malaysia, and Brunei. The Kalimantan "region", covers the vast majority of the island.
http://en.wikipedia.org/wiki/File:Borneo2_map_english_names.PNG
I'm personally not convinced that these fish (as well as mature Sumatran loaches) are any more "vibrant" in coloration than the vast majority of the clown loaches exported in the trade. Then again, I haven't seen any confirmed photos of clowns collected from these so called remote black water Kalimantan districts.
On another note, I've bought very vibrant juvie clowns that had solid orange pelvic fins, assumed that they were collected in Sumatra (and perhaps they were for all I know?) and as the loaches grew in size they developed the black blotches on their pelvic fins, just like the loaches one typically sees. I've also seen clowns that at 5-6" were extremely drab in overall coloration when compared to some of my so called "Borneo" clowns of the same size. Where these drab looking specimens were collected I have no idea.
I'm beginning to wonder if there aren't more subtle color variants out there than what is known thus far?
I've seen fish collected from the same lake, and/or river, that were the same species, but were noticeably different even when collected only a few miles apart from each other. The Gold Nugget pleco is a good example.
http://www.planetcatfish.com/cotm/cotm.php?article_id=93
L18, L81, L85 and L177 are all sold by exporters as gold nugget plecos,
and while that may be accurate, they all have subtle yet noticeable (to the trained eye) differences. Just to add to the confusion, overall coloration & patterning can vary within the same L #, and the fish can alter their colors & tones somewhat depending on the substrate, background color, etc. These fish are constantly confused, even by the exporters.
It will be interesting to see what your Sumatran fish look like a few yrs down the road.
