On a trip to Philadelphia a few years ago I stopped at a big lfs and, what do you know, poor quality frontosa with missing and badly broken up bars for sale as... wait for it... "Burundi frontosa" --as though the "Burundi" label explained the weirdness and made them worth more than regular frontosa. If I'd cared to, I could have bought a few of them, bred them, and easily passed the worst of the resulting fish off as panda or black widow fronts. Like them or not, black widow fronts are basically Burundi with blotchy, broken bars, line bred to a certain look with some clever marketing added.