ATTITUDES EXPRESSING EMOTION 9 
time the next day I photographed him as shown in the 
illustration, when he was after a roach, so that within 
eighteen hours of being turned into the pond he was 
quite at home, and had apparently forgotten his un- 
pleasant experience of the previous day. 
If a trout is hooked and the fly breaks off in his 
lip, the same fish can be caught with another fly within 
an hour, and the first fly recovered These two examples 
point to the fact that an unpleasant incident makes 
very little impression ; but a large trout marked down 
at a certain spot, and pricked with a fly on two or three 
occasions, becomes shy and rises short, and should he 
be pricked a few times more he will knock off feeding on 
the surface altogether. 
The first few pricks made him remember to tackle 
a fly with care, and the continued pricking was sufficient 
to remind him for several days to keep off fly altogether. 
Curiosity is strongly developed in fish. This is 
mainly due to the fact that they have continually 
to search for food, yet if a new piece of rock is put in a 
tank, fish will swim round and round, and under it, and 
thoroughly examine it, whereas the first inspection 
would show that it contained no food. Curiosity may 
also explain why fish take many of the quaint lures 
offered to them. Affection is a quality that fish do not 
possess. At the breeding season they certainly are 
attentive, and many fish protect and defend their eggs 
and offspring, but this subject is dealt with in the next 
chapter. 
