Spencer, none of the fish mentioned thus far are even close to it. The Malagarasi River and it's wetlands are where the vast majority of T. mbu are collected in Tanzania. Very few are actually found in lake Tanganyika, and none are found in Lake Malawi. Most of the fish found in the hobby that are endemic to Lake Tanganyika, would seldom if ever be found living in the same area as a Mbu. Personally I would just go with something that you feel has a good chance of working, and species that you personally like, vs attempting to create something more biotopish.
