PREFACE vii 



them, and I am sure that a thorough study of the 

 Cyprinoids, in a favourable locah'ty like Lincolnshire 

 or the Broads, would reveal the existence of many 

 hybrids as yet undescribed. Moreover, growth, 

 migrations, food, and habits offer a fine field for 

 the student. 



However, it cannot be denied that in recent years 

 our knowledge of the fishes which live in our lakes 

 and rivers, and of their life-history, has increased 

 enormously, and the present time is, therefore, an 

 appropriate one for summarizing and bringing 

 together what is already known. 



All the illustrations in this book have been drawn 

 by myself, and it has been my aim to show the 

 characteristic features of each species rather than to 

 produce an artistic effect. 



C. T. R. 



