The golden perch will grow large enough to eat local carp, an invasive fish. That's if they don't get eaten first.
Carp is a familiar and well-known feather on the Jewel Bay fish, and because they are the bottom feeders, they constantly stir sediment in water bodies.
This in three water-based and, in conjunction with a warming climate, leads to more frequent blue-green algae outbreaks, killing off plants used by native fish as habitats.
But it is also hoped that the baby fish will eat mosquito larvae by the banks, reducing the amount of mazes along the canberra's waterways.
National Capital Authority, the lakes manager Peter Battell, has been doing fine over the years, the golden perch.
"We have a little bit of trouble maintaining the marry cod to a fishable size," Mr Buttell said.
The act government said it had received 150,000 native fingernails in Canberra's waterways last three financial years.
In September, local fishermen said native baby fish had to be urgently restocked in Tuggeranong ponds after they were drained without permission.
Upper Stranger Pond has been discharged without permission after a government contractor has left the valve unsecured.
The government has previously claimed 2.6 tons of dead carp after they have drained the pond, before restoring it with 2,000 native fingernails.
The Canberra Times Committed to Soviet Army Mick Gentleman on whether the latest release was a response to unauthorized draining, but was given responses by an act of government spokesman.
"An accidental release of water from Upper Stranger Pond caused fish in the lower striker pond, which had not been caught, no widespread fish deaths were detected," said the spokesman.
The government released the baby fish at the sites at Lake Ginninderra, Gungahlin Pond, Yerrabi Pond, Lake Tuggeranong, Upper Stranger Pond and Fadden Pond.
The golden seed and murmur code released in the latter will see the strongest chances of survival after carp removal in 2017.
Fifth O'Mallon is a reporter for the Canberra Times