LIST OF ILLUSTRATIONS 
PERCH PALING WITH FEAR (Colour) 5 . : Frontispiece 
Facing page 
OBSERVATION POND EMPTY . i : ‘ : a ) 
OBSERVER DESCENDING INTO OBSERVATION CHAMBER amt 
LOOKING INTO THE OBSERVATION CHAMBER FROM POND, SHOWING 
HOW THE GLASS BECOMES A MIRROR AND PREVENTS THE FISH | 2 
SEEING THE OBSERVER és 2 : é 4 é iS 
LOOKING INTO THE POND FROM THE OBSERVATION CHAMBER. 
RAINBOW TROUT; TO SHOW EXTERNAL FEATURES. : . xiv 
VARYING ATTITUDES OF A PIKE é : . q 2 
ATTITUDE OF A PIKE SHOWING INTENTION TO ATTACK 4 ci 
PIKE RIGID WITH EXCITEMENT 5 : 
EMOTIONAL ATTITUDES OF A PIKE : A 5 ‘ 
PERCH BECOMING PALE FROM FEAR F F é 
PIKE AS SEEN IN THE POND . : ‘ : a) 
PIKE FOLLOWING UP A ROACH 7 a - Hall 
EGGS OF CARTILAGINOUS FISHES A . ‘ 10 
4 
4 
A PERCH SHOWING ALARM ; - P C 6 
6 
8 
EGGS OF BONY FISHES : . i ‘ = 12 
MALE STICKLEBACK BUILDING NEST : 5 a . : | 
MALE STICKLEBACK DRIVING FEMALE TO NEST E : 
STICKLEBACK ON GUARD. ‘ a ci r a : | 
STICKLEBACK ON GUARD. : 9 F 5 3 : ! 
STICKLEBACK RESENTING INTRUSION OF THE CAMERA - A 
STICKLEBACKS DEVOURING EGGS a : P : : | 
FUNGOID GROWTH ON DEAD EGG . A c é és 18 
TROUT ALEVINS DESTROYED BY FUNGUS . 5 5 : 20 
GUDGEON AS PHOTOGRAPHED IN A TANK A : i 
GUDGEON AS SEEN IN NATURAL ENVIRONMENTS fi Q nie 
DACE, SHOWING ITS DARK BACK, SILVERY SIDE, AND WHITE UNDER- 
SURFACE. P - é < . 7 p é 22 
DACE REFLECTING BARS UPON ITS BODY . ‘ 3 j 
