Суточная динамика видового разнообразия и плотности скоплений рыб в прибрежной зоне водохранилища кам лам и его притока суои кок (Вьетнам)

The daily dynamics of fish diversity and density aggregations in different riparian habitats of the reservoir Kam Lam and its tributary mouth – the river Suoi Coc (Central Vietnam) were studied. We found the change of species number and its percentage redistribution in the aggregations over the entire circadian period in the different types of habitats. It is noted that in the night the fish species diversity of littoral aggregations increased.