Increasing consumer requirements for quality, safety and environmental sustainability of seafood products are recognized as the driving forces of vertical cooperation in the fish sector. Cooperation among the participants of the fish chain becomes apparent in formation of so-called supply chain networks that embody multilateral coordination and address more than just the goals of individual organizations. This requires that supply chain networks are successfully managed. Yet, it is not clear up to now what the success of supply chain networks is and how it can be measured. Therefore, this study aims to develop and test the model of the supply chain network success. We test the model empirically using Partial Least Squares Structural Equation Modeling based on the survey of 90 leading specialized fish retailers in Germany. We discuss our results and derive implications for fish chain management. Keywords: Supply Chain