With 50 12" GHS in a 1 ac pond, you may not see much of them for several years. Providing they were in good shape going in, they survived and will populate well. If plankton is not available they will eat pellets, then one can watch for them. After several years they could be a big player in the pond and you don't have a clue. They don't bite hooks well and it is really hard for a pond guy to sample them and tell what the population is doing as for numbers and size. As far as I know, about the only way to determine their numbers and sizes is to electro-shock or gill net. This is one of several reasons why I consider gizzard shad risky business unless one has the resources to monitor them.
Last edited by Bill Cody; 02/23/10 10:57 AM.
