Dascyllus trimaculatus - Three-spot Prussian flounder example image
 The three-spotted Prussian fish (Dascyllus trimaculatus) is a typical representative of the Prussian fish. As juveniles, the fish swim beautifully in schools; as they grow older, they occupy territories and show pronounced territorial behavior. Otherwise, it is an easy-to-keep, uncomplicated and robust fish that eats quickly and well.