Mystery of dead catfish

THE mysterious appearance of dead catfish at the mouth of the Boyne River in April remains unexplained. However, investigations show the possibility they starved to death.

Testing by Biosecurity Queensland found no definitive cause for the death of the catfish between the river mouth and Benaraby Bridge.

Testing for metals and bacteria showed no results indicating a cause of death.

The report found there were signs of malnutrition.

"The initial observation that the fish were in poor condition was confirmed with the examinations revealing fish with reduced muscle mass and mostly empty stomachs, indicating a possible absence of normal feeding," the report said.

"There is no evidence of a bacterial, viral, fungal or parasitic cause of deaths, based on the samples examined and the necropsy and histological and bacteriological examinations performed."

At the time, some observers suggested the catfish had swum up the Boyne River and been blocked somewhere upstream.

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