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BiologyAdults occur in estuaries, brackish streams, lagoons and mangroves. Occasionally enter freshwater (Ref. 7391). Known to be tolerant of wide range of salinity. Used as bio-control agents, e.g., use in control of mosquito larva (Ref. 42628). Endemic to West African coastline from Senegal to the Cunen River in Namibia (Ref. 92840).