2 Responses to “TILAPIA SEX CHANGE”

  1. JonC says:


    I’m very new to aquaponics, so if the answer to my question is obvious to all, that’s why.

    You said: “In Nile Tilapia and possibly most Tilapia that temperature would be within a narrow range around 95°F (35°C) to 97°F (36°C) for said period of time then the thermostat should be set to a temperature range no lower than 80°F (27°C) and no higher than 85°F (29°C).”

    How long do you treat the Tilapia at the high temperature? Two days, between 10-12 days after yolk sac absorption?

    By setting the thermostat to 80-85°F, will the water temperature actually be 95-97°F? Sounds to me like your temperature control might need improvements.


    • JCO says:


      Sorry it took forever for me to reply, however my health and life in general have been keeping me busy. I have revised a portion of the post to this in hopes it will clear up your confusion:-

      Exposure to an elevated temperature, as described below, for fry immediately after yolk sac absorption for a period of 10 to 12 days can increase the proportion of male to female ratio substantially.


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