The site has three abandoned fishponds within 150 m of
each other. Pond A (104 m2) served as the untreated control
and ponds C (128 m2) and D (72 m2) assigned for
stocking with O. niloticus; each pond had a depth of 30
cm. These fishponds had been re-constructed under the
instruction of a Fisheries Department (FD) officer