Fig. 2. Association between a in Scientific Note The more stirring the better: cichlid fishes associate with foraging potamotrygonid rays

Fig. 2. Association between a foraging freshwater ray (Potamotrygon falkneri) and two species of cichlid fishes (Crenicichla britskii on the left and Geophagus proximus on the right). The ray settles close to the bottom, begins to undulate the disc and stir the substrate, which cause the cichlid to approach (a); as the ray proceeds foraging and forms a fine sediment cloud, the cichlids hover head-down close to the disc and watches potential prey to be uncovered by the ray's movements (b).