
© Carle Rothero-Maree
Thousands of dead fish - all of the same species - have washed up along several hundred metres of coast in Rockingham this morning.
The Department of Fisheries is investigating what caused the deaths of the fish, which officers said were scaly mackerel.
Department of Primary Industries and Regional Development's Brad Tilley said a report was first received about seven dead fish near Palm Beach jetty on Tuesday but no dead fish were observed by officers.
Mr Tilley, DPIRD's acting compliance manager, said officers returned to the beach after more reports came in on Wednesday morning.
"Fisheries officers attended and took water and fish samples around the Palm Beach jetty, and Rockingham yacht club jetty areas, which are about 500-600 metres apart," he said.
"The numbers of fish were estimated to be more than a thousand.
"The species of fish is scaly mackerel, with no other fish species observed among the dead fish.
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