Invasive areas

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UNC-CH replied the topic: Invasive areas

I did read that oscars were taking over the waters of and pushing out another fish in Florida, but I can't remember the name of it.
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Lammergeier replied the topic: Invasive areas

A big part of what makes some cichlid species a real problem as far as invasive species go is the parental care they give their offspring compared to most other fish. In environments where they're not native they tend to have an increased survival rate of offspring because there are few predators that have evolved in that environment that can circumvent the protection offered by the parents (this especially applies to mouthbrooders).

Adding to that, many cichlids are very aggressive and territorial compared to other fish species so can easily out-compete other fish for territory and food. The cichlid family of fish as a whole has a penchant for evolving/adapting very quickly to new environments as well.

In Aus, oscars aren't considered to be a high-risk invasive species, but the hardier, more aggressive red devils are, to the extent that I've heard down the grapevine they will be put onto the blacklist here (not allowed to keep, breed, sell or import) in the near future.
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turtle lover replied the topic: Invasive areas

UNC-CH wrote: I did read that oscars were taking over the waters of and pushing out another fish in Florida, but I can't remember the name of it.

sunfishes if i am right
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