Candidates tilapia broodstock for hatchery should use genetically pure strains have superior properties . This adult tilapia broodstock circulating in many communities that have deteriorated . To obtain superior sires , you should find in places such reliable , BBPBAT or halls of local fisheries .
Tilapia broodstock mature gonads or are ready to spawn , the price is quite expensive . For that , we can maintain the prospective sires from childhood until the fish is ready for spawning . The characteristics of a good candidate for tilapia broodstock are as follows :
Is a pure line and come from different breeds .
Conditions are healthy and normal body shape ( not disabled ) .
Scales large , neat arrangement .
The head is relatively small compared to its body .
Body color is thick and glossy .
His movements were agile , responsive to feeding .
Tilapia females entering the gonads mature after 5-6 months old . Female parent to be cultivated at least have reached a weight of 200-250 grams and 250-300 grams for the male parent .
As mentioned earlier , tilapia including the number of fish eggs slightly . One parent female weighing 200-250 grams only contain eggs 500-1000 grains . Of these hatch into larvae which usually ranges from 200-400 tail .
Future productivity hatchery broodstock for tilapia range 1.5-2 years . Sires that have been conceived more than two years should be replaced with new ones . Because of the quality and quantity of child is going downhill . Parent tilapia that have been spawned ready spawning back after 3-6 weeks .
