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Cod balls go in to the Upper Molonglo

By johnboy - 24 July 2012 11

cod balls

Having denuded the banks of the Molonglo (Willows! Evil! Burn them!) Territory and Municipal Services are now installing cod balls upstream of Lake Burley Griffin:

The nationally vulnerable Murray cod population has been given a helping hand in ACT waterways with the installation of 50 artificial fish habitat structures in the Molonglo River, Project Manager, Restoration of Waterways and Surrounds Project, ACT Parks and Conservation Service, Rebecca Dawson, said today.

“This trial of fish habitat restoration, upstream of Lake Burley Griffin, consists of the installation of 50 concrete reef balls measuring 1.2 metres wide by 80 cm high and weighing over 500 kilograms,” Ms Dawson said.

“These fish habitats have been designed to act as ideal breeding locations for the Murray cod that prefer solid and well protected objects in which to lay their 50,000 eggs.

“It is hoped that in providing this habitat we will see an increase in the long-term viability of the Murray cod and other large native fish populations in the Molonglo River and throughout the ACT’s waterways.

What’s Your opinion?


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11 Responses to
Cod balls go in to the Upper Molonglo
ACTAngler 12:00 am 26 Jul 12

KB1971 said :

I think they would have been better laying the tree trunks of the willows into the water to create a more natural habitat.

Except the willows rot after a few years and/or just float away!!!

borizuka 2:42 pm 25 Jul 12

The carp will love these…

chewy14 1:38 pm 24 Jul 12

rosscoact said :

chewy14 said :

EvanJames said :

They’ve made a right mess of the river banks. If you drive over the high bridge into Yass Rd, have a look at how they’ve smashed up the willows they harvested, into great big chunks, and carpeted the ground with them. Next flood….

Already happened during the March one. Half the stuff they’d piled up was washed away.

Although it probably made it cheaper seeing as they didn’t have to cart it away, haha.

Perhaps where it washed to made habitats?

rosscoact said :

chewy14 said :

EvanJames said :

They’ve made a right mess of the river banks. If you drive over the high bridge into Yass Rd, have a look at how they’ve smashed up the willows they harvested, into great big chunks, and carpeted the ground with them. Next flood….

Already happened during the March one. Half the stuff they’d piled up was washed away.

Although it probably made it cheaper seeing as they didn’t have to cart it away, haha.

Perhaps where it washed to made habitats?

Well a lot of it washed up on Coppins Crossing, where it completely wiped out the railings, so perhaps the fish can take up residence there?

rosscoact 12:55 pm 24 Jul 12

chewy14 said :

EvanJames said :

They’ve made a right mess of the river banks. If you drive over the high bridge into Yass Rd, have a look at how they’ve smashed up the willows they harvested, into great big chunks, and carpeted the ground with them. Next flood….

Already happened during the March one. Half the stuff they’d piled up was washed away.

Although it probably made it cheaper seeing as they didn’t have to cart it away, haha.

Perhaps where it washed to made habitats?

chewy14 12:34 pm 24 Jul 12

EvanJames said :

They’ve made a right mess of the river banks. If you drive over the high bridge into Yass Rd, have a look at how they’ve smashed up the willows they harvested, into great big chunks, and carpeted the ground with them. Next flood….

Already happened during the March one. Half the stuff they’d piled up was washed away.

Although it probably made it cheaper seeing as they didn’t have to cart it away, haha.

rosscoact 10:49 am 24 Jul 12

dtc said :

The_Bulldog said :

Great! At that weight they’ll most likely sink into the silt. Those that remain in place will make a convenient “swim-thru” option for carp meals.

Its good to see someone who knows more than the experts. Where can I find more people like you?

edit: I asked around, and apparently the internet is the best place. I’m off to there.

🙂

KB1971 10:36 am 24 Jul 12

I wonder if there are any plans to re-generate the river banks with native vegatation?

The cod like hiding under structures like logs & tree roots. They will also move thair positions in relation to water temperature and rive strength, an overturned log will provide them with this flexibility, not a concrete rock in the ground.

The logs also attract food of all types for them.

I think they would have been better laying the tree trunks of the willows into the water to create a more natural habitat & then re-planted river red gums or whatever is native to this area.

poetix 10:35 am 24 Jul 12

More like cod kennels than balls.

dtc 10:18 am 24 Jul 12

The_Bulldog said :

Great! At that weight they’ll most likely sink into the silt. Those that remain in place will make a convenient “swim-thru” option for carp meals.

Its good to see someone who knows more than the experts. Where can I find more people like you?

edit: I asked around, and apparently the internet is the best place. I’m off to there.

The_Bulldog 10:11 am 24 Jul 12

Great! At that weight they’ll most likely sink into the silt. Those that remain in place will make a convenient “swim-thru” option for carp meals.

As an aside, it’s nice to see some art installations that don’t resemble giant phalluses… Oh wait a sec.

EvanJames 10:04 am 24 Jul 12

They’ve made a right mess of the river banks. If you drive over the high bridge into Yass Rd, have a look at how they’ve smashed up the willows they harvested, into great big chunks, and carpeted the ground with them. Next flood….

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