The photo shows freshly hatched yolk sac fry of Nile tilapia, Oreochromis niloticus. Yolks provide the main nutrition to this early larval stage. The rate and duration of yolk consumption will be determined based on water temperature. Afterwards, yolk-sac fry will turn to swim-up fry.
Nov 03 2011
Yolk sac fry of Nile tilapia, Oreochromis niloticus
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