Let’s dive into the fascinating world of barramundi fish farming using the floating net cage method in the sea. Barramundi (Lates calcarifer), also known as seabass in Asia, is a versatile species that thrives in both freshwater and marine environments. Here’s how barramundi farming works using floating net cages:
Habitat and Biology:
Barramundi inhabit freshwater, brackish, and marine habitats, including streams, lakes, estuaries, and coastal waters. They have an elongated body, large mouth, and distinctive coloration (either olive brown with silver sides or green/blue above and silver below). Barramundi are euryhaline, meaning they can tolerate a wide range of salinities.
Floating Net Cages:
In this method, open net cages are placed in sheltered areas of the ocean or estuaries. The cages float on the water surface, allowing barramundi to grow in a controlled environment. Good water quality and disease management are crucial for successful cage aquaculture.
Broodstock Management:
Barramundi broodstock are held in floating cages or concrete/fiberglass tanks. They can be maintained in either freshwater or seawater but must be placed in seawater before the breeding season for final gonadal maturation. The high fecundity of female barramundi provides ample material for hatchery production of seed.
Feeding and Growth:
Barramundi feed well on pelleted diets. Juveniles are easy to wean onto pellets. They grow rapidly, reaching harvestable size (350 g – 3 kg) in six months to two years.
Harvesting:
For barramundi farmed in cages, harvesting is relatively straightforward.
Fish are concentrated into part of the cage (usually by lifting the net material) and removed using a dip net. Harvesting barramundi ‘free-ranging’ in ponds is more challenging and often requires seine-netting the pond or drain. Remember, barramundi farming has become widespread, especially in Southeast Asia. Whether you’re a seasoned aquaculturist or just curious about sustainable seafood, barramundi offers an exciting journey from hatchery to plate! 🐟🌊🔍
For more detailed information, you can explore resources like the FAO Cultured Aquatic Species Information Programme and other relevant materials. #barramundi #fisheries #aquaculture
