Wallenda was not injured in the accident.
Two are in critical condition and another is in guarded condition according to the Tampa Bay Times.Two others were transported to two other hospitals.
Three of the injured performers were taken to one area hospital, one was taken to Blake Hospital and another to Lakewood Ranch Medical Center.
Reis did not identify any of the injured, but said the aerialists were both men and women.
"They're extremely lucky, given the high of the fall that they survived", Brockhurst said.
In total, eight performers were on the wire practicing the final act, the pyramid, about 20 feet from the ground. Wallenda is billed as the headliner for the show, "Synergy".
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"Accidents happen", Reis said. Sarasota Fire-Rescue Spokesman Drew Winchester said the group fell 30 or more feet.
The performers were rehearsing for a show sponsored by The Circus Arts Conservatory and Circus Sarasota.
AP reported that he was the anchor of the pyramid, but he caught himself and was not injured during the fall.
Wallenda made some local headlines when he walked on top of the Orlando Eye for its grand opening in April 2015.
Wallenda, a Sarasota resident, was at the hospital and planning to make a statement later in the day.