Ducksta Posted May 23, 2006 Share Posted May 23, 2006 Anyone wanna ID the buggers? http://www.mediastatements.wa.gov.au/media...f8?OpenDocument http://www.fish.wa.gov.au/docs/pub/IMPFera.../index.php?0506 Link to comment Share on other sites More sharing options...
mianos Posted May 23, 2006 Share Posted May 23, 2006 What's electrofishing? They say this: "Electrofishing is a capture-and-release method used to obtain population estimates, length-weight relationships and age and growth, to determine the extent of the incursion and obtain samples for study." Link to comment Share on other sites More sharing options...
Matty Posted May 23, 2006 Share Posted May 23, 2006 It looks like a braziliensis hybrid. Link to comment Share on other sites More sharing options...
MikeWs Fish Posted May 23, 2006 Share Posted May 23, 2006 looks like a Geo cross perhaps by the mouth? Link to comment Share on other sites More sharing options...
Ducksta Posted May 23, 2006 Author Share Posted May 23, 2006 I think it is when they 'shock' an area with whatever voltage. It stuns the fish, they float and they can be studied while they are 'asleep'. I have read about this being done so I assume that's what they mean? ps. My gut feeling was Geo also. Link to comment Share on other sites More sharing options...
Cuong Posted May 23, 2006 Share Posted May 23, 2006 Yeah, I'm pretty sure that's how they did it. You have a long pole from the boat that branches out into heaps of wires, anything that goes in between usually floats up. I'd have to say it looks like a geo too. Link to comment Share on other sites More sharing options...
mianos Posted May 23, 2006 Share Posted May 23, 2006 I kinda think stunning them with electricity is pushing the animal cruelty limits but if I guess if it does not kill them it's not so bad. It's got to be better then poison or explosives! Link to comment Share on other sites More sharing options...
Richard Posted May 23, 2006 Share Posted May 23, 2006 I wouldn't mind having one of them in my tanks. Hope they figure out what its a hybrid of soon. So like do the biologists that are set the job to find these out have to study up cichlids just for this or would they go to cichlid experts i.e us. cheers; Richard Link to comment Share on other sites More sharing options...
wui39 Posted May 23, 2006 Share Posted May 23, 2006 Tilapia with a Geo? lol Link to comment Share on other sites More sharing options...
Ash Posted May 23, 2006 Share Posted May 23, 2006 What would a juvinile umbie look like? Link to comment Share on other sites More sharing options...
danpri Posted May 23, 2006 Share Posted May 23, 2006 Jewel Cichlid x Geo brasiliensis. Link to comment Share on other sites More sharing options...
superlohan Posted May 24, 2006 Share Posted May 24, 2006 maybe red devil cross convict Link to comment Share on other sites More sharing options...
anchar Posted May 24, 2006 Share Posted May 24, 2006 I read that G. brasiliensis that were found. They survive Perth winters too, so this is not good news. Andrea Link to comment Share on other sites More sharing options...
Wilsta Posted May 26, 2006 Share Posted May 26, 2006 It looks like a geo to me, not good for us geo keepers they will probably get outlawed!! Link to comment Share on other sites More sharing options...
wormboy Posted May 27, 2006 Share Posted May 27, 2006 I saw a different pic on the news on Tuesday and on the TV they looked a lot taller and thicker in the body, with a distinct forehead. To me they looked more like an Aequidens sp. x Geo. sp. I think electrofishing can either be either lethal or non-lethal depending on the voltage. There are several differnt types of units and they do have variable settings. The big boat mounted units are for large areas and larger fish like black bream or golden perch amongst heavy snags. The smaller backpack units are for precision work in streams and wetlands for things like pygmy perch and gambusia (needless to say if you have a hole on your waders you soon know about it ) I know a few guys at uni that use the research electrofisher to catch things like Gambusia spp. and Phalloceros caudimaculatus on a low setting so that that they can release any natives that come up. Also, the lamprey guys use it to non-destructively catch ammocoetes. It is my understanding (I could easily be wrong) that the kill voltage is rarely used as it is so non-selective and irreversable. If you are that unconcerned about the ecosystem you may as well use something like rotenone (nasty). -Mat- Link to comment Share on other sites More sharing options...
anchar Posted May 27, 2006 Share Posted May 27, 2006 Terry I have quoted you from Perth...hope you don't mind. Its a female Geophagus brasiliensis the colours are subdued because of the cold water. I put a pair in a 200 Ltr pond several years ago when I lived in Midland (2Km from Bennett Brook) the pond almost dried up in summer and was exposed to the weather in winter. I forgot the fish were in there, when I removed the pond 3 years later I found 4 very healthy adults. They will survive in the Swan. Bennett Brook originates at Mussel Pool in Whiteman Park it flows South through Caversham and Eden Hill then into the Swan River. With all the rain on Tuesday they will be in the Swan already. Flushing fish down the toilet does not put them in the river systems it sends them to sewerage treatment plants. This is one of the cruelest ways of getting rid of fish, try to imagine what it would be like on the other side of the S bend. The cichlids in Bennett Brook would have to be put there deliberately. Terry Link to comment Share on other sites More sharing options...
anchar Posted June 22, 2006 Share Posted June 22, 2006 There are a few threads about this running on PCS atm. As the authorites are going to start eradication procedures tomorrow, we decided to have a look for the fish in question. Here is the thread pertaining to today's activities.. Bennett Brook and environs. Andrea Link to comment Share on other sites More sharing options...
fishguts Posted June 27, 2006 Share Posted June 27, 2006 they look exactly like what a guy sent to me from perth,....only he claimed that they were bahia reds.......turns out to be iporangensis.....any body want six females??? Thomas Weidner ID them for me....i feel like flushing the bloody things too!!!! (moral of the story?....never buy sight unseen) now he wont even answer his phone... Link to comment Share on other sites More sharing options...
burgoid Posted June 27, 2006 Share Posted June 27, 2006 how much you want for them? Link to comment Share on other sites More sharing options...
burgoid Posted June 27, 2006 Share Posted June 27, 2006 Cause ill take em Link to comment Share on other sites More sharing options...
fishguts Posted June 28, 2006 Share Posted June 28, 2006 well, this guy charged me $58 each plus freight. so i spose if i could get $30 plus frieght, that would ease the sour taste. they have doubled in size since then...what do ya reckon? Link to comment Share on other sites More sharing options...
fishguts Posted June 28, 2006 Share Posted June 28, 2006 by the way did you get onto any zaliosus? Link to comment Share on other sites More sharing options...
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