As fish farmers we feed our fish optimal quantities of highquality feed to achieve rapid growth so that they attain market size as quickly as possible. A small challenge with this process is that the fish do not all grow at the same rate, necessitating intervention by the farmer.
The intervention we apply is to size sort the fish. This is achieved by confining the fish in a small area and offering an escape that requires them to swim through mesh or between parallel bars. Often this involves netting the fish out of their tank in small groups and placing them inside the net or size sorter that has the appropriate aperture sizes. The size of the gap is accurately determined for the species and age of fish, and allows the smaller fish to swim through, while larger fish cannot fit through the allowed space. This effectively divides them into two groups based on girth.
BENEFITS OF SIZE SORTING
This story is from the June 28, 2024 edition of Farmer's Weekly.
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This story is from the June 28, 2024 edition of Farmer's Weekly.
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