queensland Difference In Bass Growth Rates.

[rayke1938]

I caught 3 tagged bass at NPD yesterday and they all had varying growth rates.

1 .tagged by myself 28/9/15 grown from 345mm to430mm

2 .tagged by Luke 7/11/13 grown from 400mm to 410 mm

3 .tagged by Andrew 21/11/14 grown from 355cm to 400mm

Cheers

Ray

 

[ellicat]

Luke's must be a 'lure' fish.

[rayke1938]

There was a report of one in Somerset that had only grown to 48cm in 25 years Luke is a skinny bugger and the fish must have taken after him

Cheers

Ray

[Luc53]

Maybe we should keep the fast growing ones for future brood stock!!

[Drop Bear]

2 hours ago, rayke1938 said:

I caught 3 tagged bass at NPD yesterday and they all had varying growth rates.

1 .tagged by myself 28/9/15 grown from 345mm to430mm

2 .tagged by Luke 7/11/13 grown from 400mm to 410 mm

3 .tagged by Andrew 21/11/14 grown from 355cm to 400mm

Cheers

Ray

I find this very interesting thanks for posting this. Very cool 

[Drop Bear]

2 minutes ago, Luc53 said:

Maybe we should keep the fast growing ones for future brood stock!!

Has anyone done selective breeding of native fish before? Sounds exciting and scary 

[Luc53]

Don't think so.

Can't see the Qld govt/fisheries undertaking such a project. It might benefit the recreational fisherman!!

Seeing spangle perch breed in freshwater, they could be an easy species for some selective breeding experiments!!

[rayke1938]

Hatcheries always attempt to use prime brood stock and change their brood stock at regular intervals.

They also attempt to obtain brood stock from different locations to ensure diversity in the genetics of the fingerlings.

but now seem to source their brood stock from stocked dams.

A big problem now is the lack of truly wild caught fish with wild bass only in the Noosa and rivers in northern NSW all other rivers in Qld have bass that have interbred with escaped impoundment bass.

Cheers

Ray

[Drop Bear]

10 hours ago, rayke1938 said:

A big problem now is the lack of truly wild caught fish with wild bass only in the Noosa and rivers in northern NSW all other rivers in Qld have bass that have interbred with escaped impoundment bass.

Wow interesting.

Is there much genetic difference between Noosa bass and southern Bass? I meal like Mary/Clarence/Murray Cod. 

 

[The Mad Hughesy]

I love this type of info. Its science in real life! Thanks for posting Ray

[Binder]

I caught 4 tagged fish yesterday in NPD, interesting to see the results from people who don't know what they are doing, or just plain cant read a measure.....

1 - out 600days, total length grew 30mm fork length grew 35mm

2 - out 468 days, total length shrunk 15mm, no original recording for fork length

3 - out 755 days total length shrunk 20mm, fork length shrunk 10mm

4 - out 755 days total length grew 5mm, fork length grew 20mm

Only the first fish is a reliable original measurement, done by someone who knows how to tag and how to measure a fish. The 3rd was was a shocking tag job, javelin style tag shoved up in the shoulder, a miracle the fish even lived considering how close to piercing internal organs it was.  4th one looks reasonable at first glance, but the total length only grew 5mm, fork length grew 20mm, original measurement on a 35cm bass showed a difference of 30mm between fork and tail length?

 

 

[rayke1938]

I caught another 3 today.

first total length 395mm prev tagged 11/6/16 tl 380 growth 15mm

second tl 335prev tagged 295 1/10/15 tl 295 growth 30mm

third tl 400 prev tagged 370 30/9/2013 tl 370growth 30mm

Cheers

Ray

[Drop Bear]

20 hours ago, Binder said:

done by someone who knows how to tag and how to measure a fish

I love hearing about the tagging. Do you have a link to a place with instructions on how to tag? I have never attempted to tag a fish and I have never caught a tagged fish

[rayke1938]

Suntag

https://suntag.org.au/

Cheers

Ray

[Binder]

I was fortunate enough to be taught by the experienced PRFMA members back in 2008, but they have an online course now that you must pass before getting your tagging certificate, which includes evidence you have tagged fish correctly (obviously under supervision of an experienced tagger, using their tags).

A Link to the instructional videos.

http://suntag.org.au/tagging-basics/

[Drop Bear]

3 hours ago, Binder said:

A Link to the instructional videos.

Thanks @Binder