This study showed that Thai river sprat
larvae were more abundant in offshore or river
canal than near shore (Figure 2). Whitehead (1985)
described that the mostly clupeids fish was a
pelagic schooling fish and spawning in open area,
the fertilized eggs and early-life stages were
suspended in water volume as plankton. Lima and
Lima (2004) explained that fish in early life stage
had a passive movement, wind and current was a
rule for their drift and distribution. The offshore
of Pasak Jolasid reservoir was an area that strongly
received impacts from wind and current as the
same.