by the time the food is given. When

by the time the food is given. When the fodder was
always available for ingesting the feeding rhythm is
likely to be influenced by its hereditary performance
and modified by generations of artificial cultivation.
Even at the period between feeding peaks, feeding
apatite can be raised by the food floating on the water
surface, resulting in feeding activity, though much
reduced, at the valley of feeding rhythm.
Therefore, the feeding schedule for the cultured carp
should be arranged according to the peaks of feeding
rhythm in culturing conditions. It is recommended that
food be given four times in a 24-hour cycle: just after
dawn, 8:00-9:00 a.m., 14:00-15:00 p.m. and just before
sunset. This feeding schedule coincides with the fishes'
natural feeding habit, and can boost feeding quantities,
resulting in higher feed efficiency and food utilization
ratio. As fish need a large amount of dissolve oxygen
after feeding, the last feeding time should be just
before sunset to allow phytoplankton time to utilize
sunlight to replenish oxygen in the pond. Otherwise,
an aerator should be used after the last feeding time to
avoid oxygen debt in the pond.