The City of St. John's took to Twitter Tuesday afternoon to assure concerned residents that the flopping fish in Bowring Park are not dying — just mating.

Apparently, there have been some worried people visiting the west end park, and have been calling the city.

"Their flopping/breaching is normal — they're healthy and mating!" the city tweeted.

The fish are in the Bowring Park Foundation Pond by the playground and are active during the warm part of the day, a city official said.

People watching at the pond questioned whether or not the fish were OK, and the city did receive calls to its 311 hotline.

Koi fish mate in May and June, and are often observed chasing each other and churning up the water.