A few Mastacembelus species may fit the bill, although I can't accurately name the species. All I know is that, as Deadeye pointed out, is that there is a species of Lake Tangayikan (did I spell that right? Probably not) spiny eel; pretty rare and expensive though, and Blind Congo Spiny Eels, but those are also very difficult to find. I think Greshoffi and Frenatus may also be African spinys, but I'm not completely sure. I know that there is at least one species of algae-eating African goby, and my LFS did get some weird Garra-Syno-hybrid-looking thing that was supposedly an African import; it seemed to consume algae as well. Hmm. Do Madagascar-based fish count?

