In this issue:
Asian seabass has emerged as a promising alternative to shrimp farming in coastal Andhra Pradesh. This article documents the complete production cycle practiced by farmers in Krishna, Eluru and West Godavari districts, from wild egg collection to market-ready fish.
The production process spans 14-16 months across multiple phases: two nursery stages transform eggs into fingerlings, a pre-grow-out phase develops juveniles to 100-200 g, and a final grow-out period produces fish weighing 3-4 kg. Farmers rely heavily on live feed, primarily small shrimp and tilapia, with feed conversion ratios around 6:1.
While the species offers advantages such as fast growth and salinity tolerance, farmers face challenges including fluctuating export prices, rising feed costs and disease outbreaks. The lack of species-specific therapeutics further complicates disease management. Most harvested seabass currently reaches export markets through Kolkata and Chennai, though opportunities exist for domestic value-added products.
]]>The giant featherback (Notopterus chitala) - valued as food, sport fish, and natural pest controller in carp ponds - remains under-utilised in Asian aquaculture despite strong market demand. Limited knowledge of seed production has constrained commercial development, whilst wild populations face pressures from overfishing and habitat loss.
Researchers at ICAR-Central Institute of Freshwater Aquaculture have compiled practical knowledge on captive breeding and larval rearing of this air-breathing species. Their findings address key challenges: establishing brood stock, triggering natural spawning using hard substrata, managing sensitive larvae through the critical first weeks, and preventing disease transmission from live feeds.
The techniques described offer farmers a pathway to reliable seed production, potentially easing supply constraints whilst reducing pressure on wild stocks. The work demonstrates how systematic documentation of breeding protocols can unlock aquaculture potential for neglected native species with conservation value.
]]>In Purba Medinipur, India's leading fisheries district, two farmers are exploring new directions in aquaculture. Sri Buddhadeb Maity has established commercial farming of the prized murrel (Channa striatus), achieving growth rates of 250-300g within two months. His neighbour, Sri Uttam Manna, has taken an unconventional approach: cultivating freshwater aquarium fish in brackishwater ponds near the Bay of Bengal.
Manna's method challenges established practice. He has observed fewer disease problems than those typically encountered in freshwater aquarium fish operations, potentially due to the salt content in his ponds helping to control pathogens. Both farmers have developed profitable enterprises whilst sharing their methods with neighbouring producers, encouraging diversification across the region.
]]>Small indigenous fish species (SIS) are common in South and Southeast Asian inland waters and are often eaten whole. This article reviews evidence that SIS provide bioavailable vitamin A, iron, zinc, calcium and B12, alongside protein and long-chain omega-3s. It examines practical options for including SIS in carp ponds and rice-fish systems, drawing on recent field programmes, and identifies constraints, especially the seasonal, unreliable supply of seed from capture fisheries. The article considers which species are realistic candidates for hatchery production and what husbandry is required. The aim is to give producers, extension staff and policymakers a clear view of when SIS integration adds value, and what investments are needed to pilot and scale it responsibly.
]]>How can small farms boost fish yields, cut feed bills and earn from more than one crop at a time? In Meghalaya’s Ri Bhoi district, one farmer shows the way with an integrated fish-duck-poultry system across four linked ponds. Ducks and poultry “pay their rent” by fertilising the water, which powers natural food webs for carp and rohu; simple gravity flow spreads nutrients and improves aeration. Over an eight-month cycle, the farm sells fish, ducks, poultry, eggs and even dyke crops like banana and turmeric - while keeping inputs low and water quality stable. This practical case study explains the layout, stocking plan and daily management behind the results, and why integrated aquaculture is a smart, climate-resilient option for small holders.
]]>Elisa Claire Sy of E-Primate presents RAS-P.I.N.A.S, a closed-loop, water-efficient system for land-based fish farming. The technology integrates biofiltration, aeration, and mechanical treatment to support high-density production while conserving water and land and reducing disease risk. RAS-P.I.N.A.S also offers flexibility in farm siting, with trade-offs in energy use and infrastructure costs. Recirculating aquaculture systems are gaining traction as a key innovation in Asia’s sustainable aquaculture future.
]]>Green Controller by ICM Electronics is a smart water quality monitoring system for aquaculture, powered by high-precision titanium sensors. It tracks dissolved oxygen, salinity, and pH in real time, with full control through a mobile app and instant anomaly alerts. The system enables automated aeration based on live data, reducing energy use, lowering aerator run time, and improving feed conversion efficiency for more sustainable aquaculture operations. This pitch was presented Sukmit Teekhasenee of ICM Electronics.
]]>Farm Suite by Greenovator is a digital farm management tool tailored for aquaculture in Myanmar. The platform helps farms and agribusinesses streamline planning and daily operations by tracking activities, inputs, and yields through a real-time, business-grade dashboard. Recognised as a top-3 innovation in the Grow Asia Challenge, Farm Suite provides an affordable, professional alternative to manual record-keeping. With its mobile app interface, it delivers actionable insights that empower aquaculture managers to boost productivity and sustainability. This pitch was presented by Yin Yin Phyu.
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