THE SALMON FAMILY 71 
fish, but still did not feed, although the worms, as they 
were thrown in, sailed right past his nose. 
After being a week in the pond the brown trout 
under consideration took his food like the rest of the 
fish. By the way he now fed it was quite obvious that 
he was very hungry, and yet he would not feed until 
he was accustomed to his new surroundings. 
The pond being not altogether unlike his usual habi- 
tation, this brown trout fed in a week. In the past, 
I have put wild adult brown trout in tubs and tanks 
supplied with natural food and running water, but they 
never became accustomed to their surroundings and 
refused to eat. 
The fact that a salmon has come up into fresh water 
to spawn does not appear to me to be the main reason 
why they do not feed in fresh water. Early spring fish 
coming up into fresh water ten months before they 
spawn do not feed during the whole of the time, and 
yet a salmon that remains in the sea until the late 
autumn feeds freely until a month or two before spawn- 
ing, and then only ceases to feed in fresh water. 
Rainbow trout, dace, and roach have spawned in the 
pond, and all these fish fed freely the whole time. 
I believe the main reason for the non-feeding of 
salmon in fresh water is that the change of environment 
from the sea to the river, and from salt to fresh water, 
‘ 
causes the fish to be “ off colour.” 
Salmon will lie motionless for hours together at the 
bottom of a deep pool with young trout and parr 
