when were they last stocked? the barras probably ate them.
Although, why would they put such small fish in with bigger fish?
Or was this a test to see how the bream survive in dams?
Cammo
when were they last stocked? the barras probably ate them.
Although, why would they put such small fish in with bigger fish?
Or was this a test to see how the bream survive in dams?
Cammo
Last edited by Cammy; 10-05-2008 at 12:11 AM.
Australian Native Fish VidsSpecialize in Terapontida's, Perches, Cods, Gobies & Gudgeons
Cammy,
You could be right, the barra may have eaten them, they have also stocked Mangrove Jack into Awoonga and some of these have been caught.
I don't know when the bream were last stocked as i only have a summary of the quantity of the species stocked. The summary also states that there was no record of the size of the stocked fish (bream).
Most fish that are stocked into the impoundments are only small fish, 25 to 75 millimeters long apart from some that are grown out and then released (this does not happen at NPD).
I have been told by friends from the Faust Stocking Association that earlier this year when they were releasing some grown out barra (about 300 millimeters long if i remember right) at the end of the boat ramp that several big barra (over a meter long) were choping into the released fish.
There is an unknown amount of predation of all fingerlings stocked into impoundments or other areas, it's only natural.
Our group were releasing some Mary River Cod at NPD a few years ago when one of the members burst out laughing, he had just tipped a bucket full of little cod into the lake, they all quickly zoom to the bottom to take cover when a gambusia swum over the top of the little cod (25 mill long) when one little cod shot up and scoffed down the gambusia, a good start one would say.
And when stocking you are always putting small fish in with bigger ones, so the worry is not only predation by larger fish but also from birds.
Lake Monduran is stocked with both bass and barra and both species are often caught.
Cheers,
John.
Yer i no a bit of how the stocking goes, but i was refering to the size comparison and growth rates of these 2 fish.
This is the average growth rate for a wild barra according to
http://www.nativefish.asn.au/barramundi.html
Year Length range (mm)
1 310-330
2 430-500
3 529-610
4 610-690
5 730-770
6 810+
Now compare that with bream, they stand no chance in my mind of surviving in a dam full of barra. Barras double and triple in size if they have enough food source and im sure there alot in the dams, therefore they shoot like rockets.
Say they stocked the dam with 2.5 - 7.5mm bream, in one year a barra could easily eat the bream, as the bream would have only grown a couple of cm's. Not to mention the barra that are already in the dam. If the bream lived to an old age, possibly one of the big brutes might clean them up, thats if they live to that age.
Mabye consider stocking them with bass and yellas and other smaller natives, i think bass and bream would go well together as they have similar growth rates (slow). Yes there is still the threat of birds and other wild life, but atleast they wont have big barra and jacks chasing after them.
Yes bass and barra can live together, bass and bream behave differently, and bream are a shiny silver, resembling herring or bait fish, where as most bass are dark mottled colour.
Otherwise i find it pointless.
And thnx for the added info there Obi_Wan, I do get where your coming from.
I hope i didnt offend anyone or sound arrogant or anything, im just pointing out my point.
Cammo
Last edited by Cammy; 10-05-2008 at 01:18 AM.
Australian Native Fish VidsSpecialize in Terapontida's, Perches, Cods, Gobies & Gudgeons
If the stated Figures for stcoking NPD with Bass, Cod, Yellas And silvers is correct then where are these fish i know of ppl that spend many hours up there searching for a bass and never seem to find one.
As for intoducing Barra into NPD why hasnt a trial of say 100 been done ?
What's the lowest temp that the Damn reaches in winter?
Just think of all the Tilapia and Gambousia that the Barra's would clean up.
Last edited by loophole; 10-05-2008 at 10:25 PM.
"True Blue"
Loophole, Getting permission from EPA and the waterboard for release of any fish into NPD is a huge ordeal. They have been trying fopr permission for jacks for a long time and not a speck of hope yet from what I hear. Barras will be further down the list of possibilities not being a local fish to the environment.
Jack.
Originally Posted by loophole
got cold enuf for a nasty little fish kill last winter, fortunately the majority of dead fish were tillapia, but I saw a number of big, up to 50, bass bank side as well
cheers
brian
yer mate i walked around the bank also and counted 15 bass ranging from 40cm to round 60cm as i measured with my 2 feet, i walked from forgans to bullocky, tonnes of dead tillies 2 turtles and some herring but magority tillies.
Was a sad site seeing monster fish that have only been dead for a couple of hours.
Cammo
Australian Native Fish VidsSpecialize in Terapontida's, Perches, Cods, Gobies & Gudgeons
Even standing in the water this weekend I don't think a barra would like it much.
It was c c c cold. But I'm sure some could possibly survive, there is a lot of shallow bays at North Pine where they could sun themselves.Then I could get Jason Wilhelm in his Skeeter and we could work the shallows with slick rigs YEEEHAAAAA
Last years kill was savage ....saw alsorts of dead fish. even boney bream, which I thought handled the cold pretty well.
Boney Bream are often the first to go, it's just that they usualy all get eaten by birds unless it's a very big kill.
Mike
Hey BR no "if" on the numbers of fish that Obi supplied for us. That is what has gone in. You have to allow for predation, natural losses, take by anglers and over flow events to arrive at surviving numbers.
The dam is still fishing pretty well with guys who are good at what they do still catching and releasing good numbers.
agreed, that place is very healthy indeed.
Cammy,
No offence taken mate, everyone has a right to voice their opinion.
IMHO i would not be keen on stocking yellow fin bream, can't see the need. On fish colours, no doubt you would be aware that fish have the ability to change their colouration to suit their environment and enhance their ability to survive ie; yellowfin bream that live in places like deepwater bend/ dohles rocks have that silvery colour you mentioned in a previous post, the same species of fish caught on the beach can be almost as white and shinny as a mirror and the same species caught right up in brackish water can be almost black and bream caught off the oceans rocks quite offten display a bronze colour. I have seen barra in impoundments, silvery underneath with an olive/green back to a gold colour and fish that i have seen referred to as swamp dogs can be almost black.
loophole,
Yeah mate, those figures are the official PRFMA records.
As for numbers, there are still many thousands of fish in NPD even allowing for the fact that the last time the dam filled and went over and many thousands of fish went on a trip, they were catching yellowbelly at Woody Point Jetty. What also did was create a good bass fishery in both the Nth & Sth Pine rivers
Also many of our little friends take a lot more than the legal bag limits, i have called fisheries several times.
Recently a catch, tag,record and release weekend was undertaken for SEQ Water & Griffith Uni as part of a scientific study. Approx 1,000 bass were tagged, recorded, released and i think there was only one fish that was caught that already had a tag from a tagging undertaken several years ago. I will include a picture of a school of bass that was taken in March 2008.
I for one would like to see barra introduced but at the present time it is not permissable as the belief is that we are South of the barra's natural range.
Cheers,
John
Last edited by Obi _ Wan; 14-05-2008 at 09:11 PM.
That would be something wouldn't it, but it would be a shame to see our precious bass getting chased around the dam by these silver beasts...Hey I've got it....let's stock Kurwongbah with barra and keep North Pine for bass. Now thats a plan.I for one would like to see barra introduced but at the present time it is not permissable as the belief is that we are South of the barra's natural range.
[quote=. Looks like we'll have to keep heading up north for a while to get a barra fix.[/quote]
ahhh damn
"True Blue"
[quote=shayned;820792]Hey BR no "if" on the numbers of fish that Obi supplied for us. That is what has gone in. You have to allow for predation, natural losses, take by anglers and over flow events to arrive at surviving numbers.
quote]
whattha???
think ya got the wrong bloke mate
cheers
brian
Posting Permissions
Reply With Quote