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Goldfish Displacing Native Species in Upper Thames

Tuesday, 21 July 2015 07:06

The Upper Thames River Conservation Authority reminds us that our waterways are no place for goldfish.

Goldfish are causing problems in our waterways.

Marketing Specialist with the Upper Thames River Conservation Authority Steve Sauder says people releasing goldfish into the waterways is by no means a new thing, but it can cause some serious issues. "The problem is the goldfish are a non-native species and they tend to displace the native species. We have one of the most diverse rivers in Canada in terms of species of local fish. And so we want to ensure we remain a healthy river and have lots of biodiversity."

Goldfish tend to create a lot of competition when they are released into the wild."They tend to be quite aggressive in terms of their habit and feeding areas so that tends to become a competition for the native fish," says Sauder. "They also are very highly adapted for reproducing so not only are the fish that are put out into the waterways the issue, but they are also reproducing at a high rate, again displacing more of our native fish."

If you no longer want to keep your goldfish, Sauder suggests finding someone else who might enjoy having a new fishy friend instead of releasing them into our waterways.

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