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SRAC# 162

Cage Culture: Cage Construction and Placement (Revised 1997)

Michael P. Masser


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Cages for fish culture have been constructed from a variety of materials and in practically every shape and size imaginable. Basic cage construction requires that cage materials be strong, durable, and non-toxic. The cage must retain the fish yet allow maximum circulation of water through the cage. Adequate water circulation is critical to the health of the fish, in bringing oxygen into the cage, and removing wastes from the cage. Location of the cage in the pond is critical to proper circulation through the cage. Mechanical circulation and aeration through the cage may be necessary if stocking densities are high (Figure 1), cages are large, or water quality deteriorates during production (see SRAC Publication No. 161, Cage Culture – Site Selection and Water Quality).
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