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Dredge Oysters have a minimum legal harvesting shell length of 57 mm, but can grow to a length of at least 75 mm.
Dredge Oysters have a maximum age of 33 years. They are thought to reach maturity at 3 years for males and 4 years for females. Spat settlement occurs in December-February.
Dredge Oysters are found around New Zealand waters from shoreline to depths of 60 m. They are most abundant in Foveaux Strait at depths from 20-48 m.
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Key statistics
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| High |
| .17 |
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| 1 Reported commercial catch is calculated for the 12 month period to 30/09/2025 |
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| 2 Quota value and exports are calculated pro-rata to reported commercial catch for the 12 month period to 30/09/2025 |
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