REPORODUCTIVE PERFORMANCE OF OREOCHROMIS NILOTICUSTHROUGH THREE SEASONS IN EARTHEN PONDS

Reproductive performance of Oreochromis niloticus broodstock was examined in earthen ponds through three spawning seasons in Sedy Salm City, Kafer Al-Sheikh Governorate. 21 thousand females (65-150 g) and 10.5 thousand males {75-200 g) were randomly assigned to 10 ponds (750 m ) at a density of 600; 700 & 800 females and 300; 350 & 400 males per pond. Fish were exposed to different levels of water temperature ranging from 20.04 °C to 36.06 °C during the three spawning seasons. Oreochromis niloticus began to lay eggs at water temperature