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Red tide suffocating pilchards
A persistent red tide bloom is causing shoals of pilchards to swim into the surf zone around the Cape Peninsula according to Times Live.
![Red tide suffocating pilchards](https://biz-file.com/c/1111/88699.jpg)
Fisheries Department spokesman Hein Wyngaard says the reason for the mortality rate among sardines - known locally as pilchards - is the persistent red tide that extends from Walker Bay around the Cape Peninsula to St Helena Bay, Times Live reports.
The red tide is caused by the dinoflagellate Gonyaulax polygramma, a non-toxic species that has been linked to fish deaths because it depletes oxygen in the water as it decays, causing fish to suffocate.
For more:
- Times Live: Cape Sardines forced ashore
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