Despite the high numbers, however, it's still unknown if enough invasive carp are above the dam to successfully breed or establish permanent populations in the state, said Ben Larson, invasive carp field lead for the Minnesota Department of Natural Resources (DNR).

All the fish caught were adults, he said.

"I don't think it indicates they're spawning," Larson said. "They're mass spawners that need a lot of fish together to successfully pull it off. That's why we came here to do this and why we're so excited about taking 29 of them away."