A copepod parasite, Lamproglena chinensis Yü, 1937 was recorded first time from its new marine host Pampus argenteus captured from the coastal waters of Pakistan. This is the first report on the occurrence of Lamproglena chinensis in marine fish in the World. Lamproglena chinensis was reported to parasitize only freshwater fishes in many countries of the world. This species was reported previously to parasitize freshwater fish from Pakistan. The present paper provides the description of Lamproglena chinensis collected from the gill filaments of Pampus argenteus