Parent fish

• "Elderly" (obviously), about 3 years old upwards
• "Big body", about 5-7kg but not to big to save costs for induced spawning
• Healthy fish selected from ordinary fish and from defferent origins and broods. If they are frome the same family it would be a "disaster"

 

How to know which one is "daddy" and which is "mommy"? It is not ease, only experienced pangasius farmers can master this.

 

 Do you know?

• Each female broodfish is able to produce about 400.000 fries per time (so extraordinary!) and produce about 1kg of egg per year.
• A "mommy" fish can deliver "babies" twice a year, which is called "re-maturity". 

 

 First is to select mature parent fish, taking them out of ponds and putting in farming tanks like this to look after and inject hormones for 2-3 days. Then tenderly strip eggs from female fish (egg container has to be completely dry otherwise eggs will "say no" to sperm) and sperm from male fish. and parent fish finish their duties. All next stages of deliveries will be conducted by experienced staffs with the most perfect technologies. Sperm and eggs are mixed together by human, so the fertilizer process occurs and fries hatched.

 

 Sperm and eggs are mixed with a chicken feather. Fertilized eggs will be "blown" continuously in weis at temperatures of 28-30°C during 16-24 hours. After hatching, larvaefloat and swim along with water current into a larger tank. hatched larvae live in this "cradle" for only 24-30 hours and then they are stocked in growing ponds. It is the best to "free" them not later than 28 hours after hatching, otherwise they will bite each others tail and get drown.

 

The larvae float along water pipe into a tank with air circulation, the hatching rate is 70-80 percent. As tiny fries have to live in big ponds, farmers should take a very good care of these "babies".

 

Stages in which breeders have products to sell:

• Recently hatched fries
• Fingerlings (3-4 weeks old), sold to other nurseries
• Fingerlings (2-3 months old), sold to farmers