you misunderstood what i said ILIVE...... I said you will spend more time and money over the 4 months of raising them then you would if you sold them to your LFS....And in a 29 there is no way you could keep all the fry and parents for that long.... Also as they grow they will eat each other so keeping them together for that long you would loose a majority of them. Ask anyone who has tried to raise cons for feeders and most will tell you its a dragging process that ends up a failure unless you are running 5 tanks for all the fry......It will take a convict 4 months to hit 2.5 inches so be ready for the long haul....