I most certainly can. Forgive me as I ramble...
In the wild, the vast majority of tanzaniae caught and posted online are by Tourette's Fishing service. These guys offer TATF fishing trips to the same, closely guarded secret locations at the same time every year. These fish are caught in crystal clear, shallow water in river headwaters that have white, sandy substrate. These are the fish that we see in pictures that are grey, have faded stripes and have strange mixes of greens, blues and bronzes in them with a little red on the tail. They also tend to more often than not have a blue adipose fin. This is what I refer to as wild type.
Some people, either through accident or intent, manage to simulate this coloration in the aquarium. I've found that a lot of these tanks are brightly illuminated, have a lighter colored substrate and often have a blue background. In order to get what I call wild type coloration, you must do your best to simulate the environment from which the blue TATFs are being caught. I feel that the blue background is vitally important to this because it simulates the blue color of open water thanks to the combination of the effects of Rayleigh scattering and intrinsic absorption of certain parts of the electromagnetic spectrum by water.
A large portion of the problem we run into is that every ATF that people catch while fishing that I suspect is a tanzaniae that isn't showing 'wild type' colors is labeled as a vittatus. We need to keep in mind that tanzaniae is a daughter lineage to vittatus genetically. Vittatus underwent allopatric speciation thanks to the same tectonic activities that created the rift valleys; this speciation event is what created tanzaniae. It is fair to think of tanzaniae as a Vittatus Mk. II Heavy Assault Fish. In other words, it's a VATF trying it's damnedest to be a GATF. With how little fishing pressure has been applied to TATF and with how recently this pressure started (only about ten years ago), I truly expect to see a 30-40 or even more pound TATF pop up someday (BATF too, for that matter; same story).
But I digress. My point was that TATF is directly evolved from VATF and still looks very much like one to the untrained eye. In fact, while all of the other ATF species were identified and named in the early to mid 1800s, tanzaniae wasn't recognized as unique until 1986. Such is the similarity to vittatus! Most fishermen label TATF as vittatus because of the fact that they just don't know any better. I've found quite a few fish that I think are wild caught TATF that have vittatus like colors, but I can't prove it so I don't post it.
There are actually documented accounts in the hobby of tanzaniae who are showing wild type colors in a tank like the tank described above as being the ideal place for it to happen later being placed into a dark substrate, black background, dimly lit tank and starting to show VATF like colors.
It appears at this time that one can actually choose how they 'dress' their tanzaniae.
I've noticed a similar phenomenon in VATF as well, though its not as dramatic.
Edit-
Both of these fish were supposedly caught from the same river at different times of the year by the same guide service. Note the difference in the water level and the clothing of the anglers...
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