Africa: lower (Ref. 42510), middle and upper Congo River basin, from southern Cameroon up to Lake Mweru (Ref. 78218) in Zambia and Democratic Republic of the Congo
Definition: length from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body