Artisanal cast-net (Bisi Dela) throwing: weighted perimeter coordination in river shallows?
How do river fishers throw circular weighted monofilament cast nets across moving current seams to capture wild freshwater tilapia and snakehead without net snags?
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6 Answers from travellers
Throwing a traditional circular cast net (Bisi Dela / Wisidela) in moving river waters demands coordinated balance and rotational body mechanics. The net, measuring 3 to 4 meters in diameter, has its outer rim weighted with hundreds of small lead pellets or ceramic rings. The fisher folds the net across one arm, grips a third of the weighted lead-line in their teeth or right hand, and pivots from the waist to launch the net. The circular trajectory causes centrifugal force to spread the net into a wide disc over the water surface, dropping fast to trap fish against the riverbed before the center retrieval cord draws closed.
Never throw over submerged tree branches or jagged boulders; snagged lead lines tear thin monofilament netting and trap the gear on the river bottom.
Wading anglers must step with care on slick river clay; losing footing while holding a 5kg wet net can pull a fisher under in fast current seams.
Targeting areas around sandbanks where water deepens from 0.5 to 1.5 meters yields clean catches of Mozambique tilapia and lula snakehead.
Wash and hang the cast net in morning shade after fishing; drying nylon in direct sunlight makes lines brittle and prone to knot failure.
In inland irrigation reservoirs, fishers balance on traditional dugout canoes (Kula Oru) to cast over deep weed beds.
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