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NEWS
Bream in the Rain
Bream tagging research reveals some interesting habits in times of heavy rainfallResearch using acoustic tags on bream in NSW estuaries has shown that Yellowfin Bream respond to rainfall and the resulting freshwater flows in interesting ways.
Rainfall events are associated with a downstream change in the fish’s location. Movements are rapid and fish return quickly to their original residences.
These short-term rainfall events have also been found to cause a complete switch in the activity, with fish changing from being diurnal to nocturnal (more active during the night). Bream typically make use of the entire water column.
However, during high rainfall events bream will move to and remain at shallow depths until turbidity and salinity return to normal. These shifts in distribution and activity are likely caused by changes in salinity, turbidity, temperature, habitat, predator prey relationships or a combination of these.
This work was undertaken through the NSW Coastal and Estuarine Fish Tracking (CEFT) Project – a partnership between NSW DPI, the University of NSW and NSW recreational fishers (with funds provided by the NSW Recreational Fishing Saltwater Trust, the Australian Research Council, and NSW DPI).
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Written byBoatsales Staff
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