What else did the electro survey show?
For example, if you have a ton of crappie, they spawn earlier than the bass and bluegill. If the crappie fry and then fingerlings eat all of the forage sources for that size range, then there is very little left for the newly-spawned bass and/or bluegill.
Also, remember that bass are cannibals. If there is very little forage available in the pond, then the large bass will eat all of the small bass.
