Zebrafish has become a model organism for the study of developmental biology and genetics. Less is, however, known about the behaviour of this cyprinid fish. A zebrafish is exposed to many unfamiliar objects during its lifetime, and the response to these stimuli is critical for an adaptive behaviour. This book presents a master thesis from the University of Bergen in Norway on the behaviour of zebrafish of different origin and background towards a novel object and how the alarm pheromone released by this species upon predator attack modifies the response. In this study we found that...