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Brisbane River Bass
MONITORING AUSTRALIAN BASS IN BRISBANE RIVER 1990‐2013 This report has been prepared by Infofish Australia for Brisbane Valley Anglers. November 2013 The report provides: A summary of tagging of Australian Bass in the Brisbane River by members of Brisbane Valley Anglers and others from 1990-2013. A summary of recaptures of Australian Bass tagged in Lake Somerset from 2008-2013. Download the
RECORD DISTANCE TRAVELED
Last year our partner program, Westag in Western Australia got a remarkable recapture. A Samsonfish tagged off Rottnest Island west of Perth in Jan 2006 was recaptured not far from Port Lincoln in South Australia. It had been out for 7.25 years and was recaptured 2,160km from where tagged. That is double to furthest distance we have for a fish
BLUE THREADFIN GET TOGETHER
For some time now we have known that Blue Threadfin, those unusual whiskered fish previously known as “Salmon” have spawned at the mouth of the Fitzroy River in Central Queensland. It has taken a long time to get tagging data to support this and an interesting story is evolving. From 1985-2013 there have been 1,363 Blue Threadfin tagged in the
SNAPPER LEAVE HOME
Most Snapper hang out in their favourite area as juveniles, but like most teenagers move on when they become adults. From 1985-2013 there have been 12,477 Snapper tagged and 706 (5.7%) recaptures of individual fish in SE Queensland from Mooloolaba to the NSW border. Most of the fish tagged were juveniles in the size range 200:350mm. Of the recaptures there
RECORD FOR DAYS OUT
Staying with Golden Perch the record for the longest time between tagging and recapture for a Suntag fish was broken recently when a fish was recaptured 6,865 days (18.8 years) after being tagged in Feb 1995. The fish was tagged and recaptured in Lake Somerset and grew from 360mm to 455mm or just 95mm. So next time you catch a
THE GOLDEN PERCH URGE
While Barramundi move downstream on flooding the opposite is true for Golden Perch. For Golden Perch that moved over 10km between tagging and recapture 30 (83.3%) moved upstream while 6 (16.7%) fish moved downstream. Of the upstream recaptures 9 were caught just below the next weir upstream from where tagged that would have impeded upstream movement. However Golden Perch is
THE BARRAMUNDI URGE
How strong is the urge in Barramundi to take part in spawning and move from freshwater down to the estuary? Well it seems that no matter how long the river is and what obstacles may be in the way the urge means they will take on all challenges. To illustrate that in 2007 there were 848 tagged Barramundi stocked into
HOW FAR DO FLATHEAD MOVE? GUESS AND WIN A LURE
Flathead are considered to be fish that are fairly localised in its movement and that is generally true. Of the 4,116 Flathead that have been recaptured to date 88.4% have been recaptured within 20km of where tagged. That suggests that they are mostly localised. Interestingly 178 fish (4.3%) were recaptured in the same place as where tagged, almost exactly a
WHERE HAVE THE SOMERSET BASS GONE?
This meant that there were very few opportunities for fish to leave the lake. Since 2008 the dam has spilled a number of times causing flooding downstream in Ipswich and Brisbane. This also provided the opportunity for fish to leave the lake. Since 2008 there have been 65 recaptures of fish tagged prior to 2008 and 63.1% of recaptures have
Infofish Citizen Science & Suntag Report now Available
Infofish Citizen Science & Suntag Report Author : Bill Sawynok Size : 3.3MB