The zebrafish is a tropical freshwater fish belonging to the carp family of the order Cypriniformes. It is a popular aquarium fish native to South America. The name comes from the horizontal blue stripes on their body which resembles a zebra. The zebrafish is an important and widely used vertebrate model organism in scientific research, particularly drug development. It has remarkable regenerative abilities, and has been modified by scientists to produce many transgenic strains. The zebra fish shares 70% of its genes with the humans and has many organs similar to that of humans. Hence any type of disease which affects human body parts can also be remodelled in a zebrafish. This book provides comprehensive insights into the study of zebrafish. From theories to research to practical applications, case studies related to all contemporary topics of relevance to this field have been included herein. A number of latest researches have been included in this book to keep the readers up-to-date with the global concepts in this area of study.