Lee Marks and his family were very upset to find that the koi and other exotic fish that lived in their pond turned up dead Saturday morning.

“All these beautiful coy fish and other fish just dead,” he said. “It’s just awful. It’s horrible.”

Now Marks, like many others, wants to find out the reason

“They just all don’t die at once like that,” he said.

Jen Wheeler is the owner of Pond Doctors. She services fish ponds all over South Florida.