Catfish culture in circular tanks with high fish densities for youth employment and halting stress migration appeared very successful in Ghana. The same method also appeared successful to integrate IDPs into host communities in NE Nigeria and stop youth from joining militias. In three cubic meters of water, 500 kg of fish can be cultured, provided they are fed regularly. The fish excrements pollute the water and has to be partly replaced regularly. The “wastewater” is then used for crop culture. Formation of clusters and cooperatives leading to sustainable processors unions was one of the achievements.