Homeowners at the River Plantation subdivision in Parrish want to know what caused a massive fish kill in three retention ponds on Sunday.

"There were several hundred floating around out there. I mean, some good size fish too," said homeowner Joseph Romant. "My grandkids come out here. I don't know what they put in this water."

"We're not sure what happened," said homeowner Denny Karras. "So, that's kind of where we're at."

The fish kill is attracting a lot of vultures and residents said the smell is worse than the sight.

"There were so many vultures over there you couldn't see the grass," Romant said.

"Probably hundreds of fish and these birds are everywhere," said homeowner Linda Karras.

Karras said this is the first time she's seen a fish kill in the seven years her family has lived in River Plantation.

The Florida Fish and Wildlife Commission does not investigate fish kills in retention ponds on private property.

The Florida Department of Agriculture and Consumer Services will investigate any fish kill where pesticides are suspected as the cause.

A spokesperson said the agency has not received a complaint. Residents can file complaints by calling FDACS at (850)617-7996.

Fish kills are common in the Florida summer and are almost always caused by water that gets too warm, causing low levels of dissolved oxygen, according to experts.