Brown Trout Ton 
frost makes them run quickly to their spawning-beds. They select a 
place where the gravel is fairly fine and is not likely to shift. Here 
Female turned on her side, digging up the gravel. 
Fic. 158.—Male and Female Trout spawning. 

the female digs a hole in the gravel with her tail, striking four 
or five times, and making the water dirty. Every three or four 
Y 
