North Australian FISH FINDER TM forums

From NT Barra Research ...

"Members of the barra tracking research team have just returned from a 4 day trip to the Roper River. After downloading bulk acoustic tracking data, we are amazed by the behaviour of the tagged barramundi! Movements are tracked by automated listening stations placed at intervals from 5km offshore of the estuary mouth all the way upstream to Mataranka.

"Since the project began in late 2015, our 40 stations have recorded more than 2.6 million detections from more than 180 tagged barra, ranging from tiddlers to metre-plus fish.

"Some of our star performers include a 630mm fish that was detected 10,065 times on 28 logging stations. This fish moved over a range of 185 km, including many large-scale movements within that range. In contrast, a 670mm fish favoured one location over a 16-month period, with 44,079 detections from that location and nowhere else. He obviously likes that snag!

"In between these extremes are all kinds of movement behaviour patterns. No wonder it’s hard to work out what barra are doing and how to catch them.
Good luck to our tagged barra over the wet season. Now we have a few months to begin interpreting the massive data set and trying to figure out what it all means!"

More here ... https://www.facebook.com/NTBarraResearch/

That's extremely interesting information. Good luck trying to locate that bl..dy red tagged fish!!!!

At the AFANT agm, we listened to a talk by the scientist working on the project. It was really interesting to say the least.
One thing that stuck in my mind was one fish was recorded and tagged in a location and then a couple of years later, the same fish was found very close to the original tag location.
So using normal logic you would conclude that the fish spent most of its time in the general area.
NOT SO!
The digital recordings of its movements showed that it travelled nearly 200 km during that time and went to the ocean and back. Then up and down the river, out onto the floodplains etc etc