Invasive photos and locations

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I don't have any picture proof any longer, but when I lived in Peth Australia, before moving to the US in 2013, I heard a rumor of geophagus brasiliensis being netted in teh western suburbs of Perth. I confirmed the rumors as truth by cast net catching these geos in 2 separate public bodies of water. The very first cast of my net in a small creek I caught a 9" female. I was totally shocked. Over the ensuing days I caught about 100+ in the 2-4" range in the same creek system, which incidentally drained into the Swan River. I also caught a bunch in a small 1/2 acre pond on 1 of the public golf courses.
 
When I lived in Wisconsin, Asian brown gobies were taking over the near shore habitat of lake Michigan.
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While Florida, Tilapia, oscars, and uropthalmus dominated the area waters from Sarasota south.
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Here in Panama, Tilapia are everywhere.
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And lakes such as Gatun, Arenosa and Bayano, the endemic cichlids have been usurped by invasive Cichla. Oscars, and of couse Tilapia.
I try to do my part, by eating them whenever I get the chance
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I also thought it amusing when visiting Baltimore a couple years back, when I found Snake Head on a restaurant menu.
Of course I had to try it.
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