Survey of economic activities, animal protein intake, fishery activities and fish yieids in the Sepik-Ramu catchment, 1991-1992. Part II· Results and Discussion
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In 1987 the Sepik River Fish Stock Enhancement Project (SRFSEP) started its activities. During the first stage (1987 - 1990). studies on the fish stocks in the lower order streams and rivers in the Sepik-Ramu catchment area were conducted. Prior to this the fish stock and fishing activities of the Sepik flooplain only had been studied. It was concluded that the yield from the Sepik-Ramu catchment area was about 10% that which could be expected from a similar size river system elsewhere in Asia. Afica or South America. The fish stock is thoughuo be limited by the-absence of native fish species from freshwater fish families due to the geological history of New Guinea. and the very recent creation of the Sepik floodplain (approximately 6000 years ago), with consequently very few (3) native fish species which are well adapted to floodplain conditions (Coates 1990). It was proposed that new fish species should be imported and stocked in the Sepik-Ramu catchment area to increase the total fi sh stock as a means to increase the fish catches. nutritional status and income of the population residing in the catchment area. During the first phase of the project several species were identified as suitable in terms of expected impact on fish yields and expected minimum effect on native fauna. Actual stocking of newly imported fish species by the project started in June 1991.