The Biology and Culture of Tilapias

Table 4. Culture of all-male tilapia hybrids (Sarolherodon niloticus x S. aureus) in a 4.2-ha polyculture pond at Gan-Shmuel, Israel, over two culture
periods. c \O
P

Species

Average

Culture Average Density weight at

Stocking Harvesting period stocking at harvest harvest Yield

date date (days)* weight (g) ( fishlha) (g) (kg/ha)

Common carp
(Cyprinus carpio) I

Common carp
(Cyprinus carpio) I1

Feb. 24 Aug. 6 143 50 3,000 942 2,670

Apr. 6 Aug. 6 122 15 3,444 230 730

Tilapia Apr. 5 Aug. 6 123 148 2,020 487 680

Silver carp Feb. 24 Aug. 6 143 200 1,720 1,311 1,910
(Hypophthalmichthys molitrix)
Totals for first culture period 10,184 5,990

Common carp
(Cyprinus carpio) I

Common carp
(Cyprinus carpio) I1

Tilapia

Mullet
(Mugil cephalus)

Aug. 8 Dec. 12 99 387 3,230 1,018 2,040

Aug. 11 Dec. 12 96 10 3,120 235 700

Aug. 8 Dec. 12 99 4 8 2,850 288 680

Aug. 22 Dec. 12 85 160 1,180 430 320

Silver carp Aug. 22 Dec. 12 85 416 1,600 1.000 930
(Hypophthalmichthys molitrix)
Totals for second culture period 11,980 4,670

Total annual yield (242 days) 10,660

*Taken as within the period March 15 to November 15. when the temperature is suitable for fish growth.