This species is found in sheltered, silty or sand-bottomed estuaries at depths between 1 and 30 m.
Flat oysters, like all other oyster species, are filter feeders, feeding on, and taking in anything small enough to be filtered in their gills. This may include plankton, microalgae or inorganic material.
The oyster industry in southern Australia has started farming O. angasi, after the extensive oyster reefs that had existed prior to European colonisation were mostly eradicated due to over-exploitation during the 19th and early 20th Centuries.
- National Library of Australia > Trove: Oyster beds. South Australian Register, 15 December 1884. P 4. Accessed 8 May 2015.
- Alleway, H. K. and Connell S.D. (2015): Loss of an ecological baseline through the eradication of oyster reefs from coastal ecosystems and human memory. Conservation Biology, Society for Conservation Biology. DOI: 10.1111/cobi.12452
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