The underlying themes of my research program are the neuroethology and behavioral ecology. My current focus is the relation between ecological selection pressure and brain system. I am interested specifically in understanding of neuronal system, ecological mechanism, development, and evolution of lateralized predation behavior in the scale-eating cichlid fish. Their behavioral laterality appears to share several features in common with handedness in humans. My field site is Lake Tanganyika in Africa.
The scale-eating cichlid fish (Perissodus microlepis) exhibit
a remarkable dimorphic mouth asymmetry.
The adult fish exhibit conspicuously lateralized predation behavior that is related to the direction of their mouth asymmetry (illastrated by H. Kawai).