The book ""Heraldry of Fish: Notices of the Principal Families Bearing Fish in Their Arms"" by Thomas Moule is a comprehensive guide to the use of fish in heraldry. The book provides a detailed description of the various types of fish that are commonly used in heraldry, as well as the meaning and symbolism behind them. It also includes information on the principal families that have used fish in their coats of arms and their significance in history...