Species Composition, Density and Distribution of Fish Larvae in the Cambodian Water

Abstract

The species composition of fish larvae in different habitats are very important for fisheries management. In total of 2,606 individual representing 47 families were collected between 10 – 21 November from 22 stations in Cambodian water. Sample was collected using a oring net from the surface layer and an oblique haul each station. Time for haul depended on water depth. The mean density of ichthyoplankton at this area was 658 ind./1000 m3 .The catches consisted primarily of fish larvae, indicating that the Cambodian water was important as nursery ground for fish. The top major families were Gobiidae (42.55% contribution), Engraulidae (9.98% contribution), Bothidae (9.22% contribution), Bregmacerotidae (42.55% contribution) and Caragidae (9.98% contribution) were dominant in the catch. Station 16 had highest density amongst the stations. The average diversity index was 1.72. The average evenness index was 0.88. The average family richness was 11 families. Amongst 47 families, 10 appeared to be commercially important and they are inhabit inshore as adults fish.