Archerfish are remarkably accurate in
their shooting; adult fish almost
always hit the target on the first shot.
They can bring down insects and other
prey such as grasshoppers, spiders
and butterflies, on perches, up to 3 m
above the water's surface. This is
partially due to their good eyesight,
but also their ability to compensate for
the refraction of light as it passes
through the air water interface when
aiming for their prey. They typically
spit at prey at a mean angle of about
74 degrees from the horizontal, but can
still aim accurately when spitting at
angles between 45 and 110 degrees.
