Barramundi or Asian Sea Bass ( Lates calcarifer )

Barramundi are a predatory fish species typically inhabiting estuaries and rivers from the Persian Gulf, through SE Asia and into Northern Australia . They are euryhaline, which means they can live in salt or fresh water and they adapt very quickly to rapid changes in salinity with little or no acclimatization at all.

They are a fast growing species, attaining 1-2” within a month of hatching and 1-2 kg within a year. They can attain a maximum size in excess of 20 kg and are a popular angling species due to their hard fighting abilities and the distinct “boof” noise they make when taking a lure. Their few bones and white flaky meat has made them a highly rated table fish and they are fast becoming a new global fish species.

 
 
   

In Asia , it is most common to stock young barramundi fry (5 mm - 12 days post hatching) in fertilized earth ponds for nursery in either brackish or fresh water. They are fed on live Moina and trash fish emulsion for a total period of 1 month before all the fish are harvested at a size of 1-2”. The fish are highly cannibalistic and survival rates typically vary between 10-50%. Alternatively they can be nursed in concrete tanks. This is more labour intensive, but enables early weaning onto commercial diets and better control over cannibalism, as the fish can be regularly graded.

Barramundi are a high fecund fish, typically producing 2-10 million eggs, but up to 30 million eggs per fish spawning around the full moon. The eggs float and can be easily collected from spawning tanks. Hatching occurs within 18 hours after fertilization and the young fry (1.5 mm in length) are initially fed on rotifers. Artemia and Moina gradually replace the Moina and by day 15 the young fry can be weaned onto finely chopped fish or artificial microdiets.

Although 12 day old fry at 5 mm in length are suitable for stocking in nursery, they don't travel long distances so well and Nam Sai recommends that customers buy 10 mm fish aged 20 days which we have successfully sent on journeys up to 40 hours. They can also be supplied at 1” when they are fully weaned on to 1 mm commercial pellets produced by INVE (NRD).

Availability:    Nam Sai can supply barramundi fry almost all year round, although the main season is between March and November. During the Thai cold season from Dec-Feb there is limited availability and prices are more expensive. Please allow 3 weeks for delivery of barramundi.

 

Prices:

Size 10 mm., 20 days old 25 mm., fully weaned fish
volume baht $US per 100 baht $US per 100
<3,000     4.50 15.00
<5,000 1.00 3.33 4.00 13.33
<10,000 0.80 2.67 3.50 11.67
<20,000 0.60 2.00 3.00 10.00
<30,000 0.50 1.67 2.80 9.33
<50,000 0.46 1.53 2.70 9.00
>50,000 0.43 1.43 2.60 8.67
>100,000 0.40 1.33 2.50 8.33
Fish/box 4,000 – 8,000 1,000 – 2,000
Please note that the prices are not inclusive of packing and transport.
Baht/$US = 30