Nitrate is relatively non-toxic to fish, but an accumulation of ammonia and nitrite can cause mortality. Tilapia begin to die at ammonia concentrations around 2 mg/litre (expressed as NH3-N) and nitrite levels of 5 mg/litre (as NO2-N).

How big can a tilapia get?

Tilapia fish will grow from hatchling to full size around 240 days. At the grown stage, the full size of your tilapia fish should be between 15 to 20 ounces or 450 to 565 grams.

How long does a tilapia take to mature?

Tilapia tends to breed easily, which can lead to overcrowding that can then stunt growth. Keep an eye out for this. The recommended rate is five fingerlings in a pond per metre squared. Under the right conditions, fingerlings can reach maturity in six to eight months.