Invasive areas

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turtle lover created the topic: Invasive areas

Where are oscars introduced and what ecological damage do they cause?

*This is out of curiosity.
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DRACO replied the topic: Re: Invasive areas

hey turtle lover, long time no post huh! where have you've been?

what do mean "where"? in your area? or in the world in general?
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Rocksor replied the topic: Re: Invasive areas

Florida
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turtle lover replied the topic: Re: Invasive areas

Other than South Florida
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DRACO replied the topic: Re: Invasive areas

i don't believe an oscar fish can be an invasive as what people say...
unlike tilapia, oscar needs an slate or stable base to lay eggs... and
needs a male to fertilized eggs... while tilapia can spawn anywhere, can
reverse sex to breed! same is true with snake head and pleco....

i know for a fact that Philippine waters had been infested with plecs
but not an oscar... oscars for sure will end up in ordinary peoples
dining table LOL!
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turtle lover replied the topic: Invasive areas

or at least established
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turtle lover replied the topic: Re: Invasive areas

DRACO wrote: i don't believe an oscar fish can be an invasive as what people say...
unlike tilapia, oscar needs an slate or stable base to lay eggs... and
needs a male to fertilized eggs... while tilapia can spawn anywhere, can
reverse sex to breed! same is true with snake head and pleco....

i know for a fact that Philippine waters had been infested with plecs
but not an oscar... oscars for sure will end up in ordinary peoples
dining table LOL!

Like in the Pasig River. I can see them breathing near the river bank while on the road from Taguig.
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turtle lover replied the topic: Re: Invasive areas

DRACO wrote: i don't believe an oscar fish can be an invasive as what people say...
unlike tilapia, oscar needs an slate or stable base to lay eggs... and
needs a male to fertilized eggs... while tilapia can spawn anywhere, can
reverse sex to breed! same is true with snake head and pleco....

i know for a fact that Philippine waters had been infested with plecs
but not an oscar... oscars for sure will end up in ordinary peoples
dining table LOL!

Also, the Philippines has an introduced population of Chitala ornata, Jaguar cichlid, and Channa micropeltes. Plecos and snakeheads can change gender????
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noodle replied the topic: Invasive areas

We have a few small established populations of them in Australia. Most are in QLD, Cairns and Townsville are the two main places but also in a few other rivers in that area from what I have heard.

There is also a population of oscars down south in Victoria in the artificially warm cooling podage at Hazelwood power station. I am told that all kinds of amazing tropical fish live in there and would love to head down and go fishing there one day.

As far as environmental impact goes, I doubt they have done too much damage in Australia for a number of reasons. If they have done much damage it has gone largely unstudied. This link talks about them a bit but is mostly focussed on other exotics www.dpi.qld.gov.au/extra/aquaticinvaders/add_table_2.html
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Lammergeier replied the topic: Invasive areas

Oscars at Hazelwood? No way :O I thought there were only RDs and convicts down there.
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