A stocklist for an african oddball setup could include these fishes: African brown knife, Polypterus species like Senegalus and Delhezi, Synodontis species like Nigriventis and Cameleopardis or Eupterus, Ropefish, Ctenopoma species like Acutirostre and kingsleyae or ansorgii. Distichodus Affinis ( if you want a nice schooling fish), African Butterfly fish, Elephantnoses and other myrmoriids that don´t get too big (like aba aba). Caecomastacembellus ellipsifer (eel), Bedotia madagascariensis.
Hope this list will help, these fish are for tanks between 55 and 120