Donnie FYI those that go in a gage (if the cage is off the bottom) will not successfully reproduce. Because they are mouth brooders they have to be able to pick up the eggs off the bottom. Using cages is one method used to grow out tilapia without reproduction caused stunting. See : http://srac.tamu.edu/tmppdfs/13452410-28...00cde556b257664

"Fish farming strategies that prevent overcrowding and stunting include: 1) cage farming where eggs fall through the mesh to the pond bottom before the female can collect
them for brooding; ... "