Urgent Advice Needed: Fry Deaths During Sex Reversal
I’m kindly asking for advice and guidance from experienced fish farmers and aquaculture professionals. I am facing a serious problem with my Oreochromis niloticus (Nile tilapia) fry.
Whenever I collect the fry and start the sex-reversal feeding program, I experience significant mortality. Before they die, the fry show the symptoms shown in the attached pictures.
For those with more experience in tilapia fry production and sex reversal, what could be the possible cause of this problem, and what measures can I take to control or prevent the mortality?
I would greatly appreciate your advice, experience, and guidance on how to manage this problem. Thank you in advance.