It's been my experience with LCS that they are fairly prolific. The amount of young my LCS produced this year was impressive. I only stocked the 0.34 acre pond with 27 2" fish in '09. Took them 2 years to begin maturing, with their first spawn in '11. This spring they really pulled off a huge spawn. I have thousands of LCS now. Without predation, most species will explode in numbers. I only stocked between 50-100 of all the forage species I have and now have 1,000's of all. I actually only stocked 17 banded killifish and now have 1,000's of them. I am to the point now where my forage fish would be starting to stunt if I hadn't started pelleted feeding them.
When the predators go in next year, they'll be well fed and the numbers will plummet in short time.