5141 Ophisternon afrum (Boulenger, 1909) Synbranchidae Swamp-eels Synbranchiformes Teleostei Guinea swamp eel Africa: coastal river at Mansoa Point, Guinea Bissau (Ref. 57291, 116049). Also recorded from Niger delta, Nigeria (Ref. 57291). P 91010.1006 4 N 6 E Ophisternon afrum P 87035.000987035.0011 4 N 6 E Ophisternon afrum