Bream movement

 Been having a bit of a bream fish in the murray lately and have been thinking about how much effect the heavy fresh water load coming downstream has on the bream. At the peak of the flow the water was well over the banks in the yunderup area and the amount of water flowing downstream was something to see. This makes me think that for the entire length of the river right down to the mouth at the estuary has got to be completely fresh with zero salinity. I was thinking this may displace the bream from the river onto the flats surrounding the river mouth in the estuary where there maybe favourable salinity. Just wondering what others thoughts on this are.


Lefty 44's picture

Posts: 72

Date Joined: 04/12/17

Bream

Mon, 2021-08-23 10:43

 Bream can tolerate fresh and salt water.

They will grow just fine in totally fresh water although generally a lot slower.

The Moore river is a good example of this with the opening and closing of the mouth.

Yes Bream will travel down to the area where the fresh and salt meet but they are generally "School" sizes.

Big blue nose can perch in her favourite snag and be quite happy.

It's also worth noting that fresh water will travel on top and you can still get saltier sections in deep holes.

Flooding in the river will also trigger breeding events. Bigger rain generally equal better recruitment. 

jighead's picture

Posts: 664

Date Joined: 03/02/12

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Mon, 2021-08-23 13:01

 Thanks for the reply Lefty. Some good points there to consider.

Jackfrost80's picture

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Date Joined: 07/05/12

I was chatting to a fella who

Mon, 2021-08-23 15:01

I was chatting to a fella who fished for bream around boundary island around this time of year so there my be something to it

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jighead's picture

Posts: 664

Date Joined: 03/02/12

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Mon, 2021-08-23 16:44

Interesting to know. Thanks frosty.