Murray cod are not tolerant to salinity shifts as they are purely freshwater species thus good water quality is a must. Water temperature must be maintained at 24-25°C, pH at 6-8, DO must be greater than 3mg/L and free ammonia level of less than 0.1 mg/L. Also, water source for production must be free of contaminants and even pesticides.
The recommended stocking density for Murray cod in tanks is 40kg/m3. They are aggressive fish and they tend to be cannibalistic if combined with smaller ones thus regular size-grading is necessary which could also help ensure equal feeding rate and almost uniform growth rate. In its natural environment, they usually feed on fish, crayfish and frogs but in captivity, it could readily accept formulated feeds such as those given to salmonids.
Once they reach marketable size, fish could be harvested using scoop nets. This must be done during the coolest temperature of the day.
|FCR||1.3 - 1.5|
|pH||6.5 - 8|
|Temperature||15°C - 25°C|
|Daily Feeding Rate||2x|